Big cross-border tunnel found linking Tijuana, San Diego
SAN DIEGO (AP) — U.S. authorities on Monday announced the discovery of a major drug smuggling tunnel — running about the length of six football fields — from Mexico to a warehouse in an industrial area in the U.S.
The secret passage from Tijuana to San Diego featured rail and ventilation systems, electricity and reinforced walls, authorities said. It was discovered near San Diego’s Otay Mesa border crossing in an area where more than a dozen other sophisticated tunnels have been found in the last two decades.
U.S. authorities said it was unknown how long the tunnel had been operating and what amount of drugs, if any, got through undetected. They seized 1,762 pounds (799 kg) of cocaine, 165 pounds (75 kg) of meth and 3.5 pounds (1.6 kg) of heroin in connection with the investigation.
Six people, ages 31 to 55, were charged with conspiring to distribute cocaine. All are Southern California residents.
The tunnel is in one of the most fortified stretches of the border, illustrating the limitations of border walls. While considered effective against small, crudely built tunnels called “gopher holes,” walls are no match for more sophisticated passages that run deeper underground.
The latest passage, discovered Friday, ran one-third of a mile (532 m) to Tijuana. It was 4 feet (1.2 m) in diameter and about six stories deep.
The type of drugs seized may signal a shift from the multi-ton loads of marijuana that were often found in discoveries before California legalized pot for recreational use in 2019.
Hard drugs, such as heroin, methamphetamine and fentanyl, are typically smuggled through official border crossings from Mexico because their small size and lack of odor make them difficult to detect. But tunnels give smugglers an advantage of being able to carry huge loads at lightning speed.
The tunnel exited the United States in a nondescript warehouse named “Amistad Park” on a street that is busy with large semitrailers during the day but quiet at night. On Monday, armed guards watched over a small shaft with a ladder that descended into the tunnel.
After staking out a home that was recently used to stash drugs, officials began making traffic stops of vehicles that had been there or at a warehouse near the border, turning up boxes full of cocaine, according to a federal criminal complaint filed in San Diego.
They raided the properties — finding no other drugs at the warehouse, but a tunnel opening carved into the cement floor, federal prosecutors said.
Authorities have found about 15 sophisticated tunnels on California’s border with Mexico since 2006.
Many tunnels, including the one announced Monday, are in San Diego’s Otay Mesa industrial area, where clay-like soil is conducive to digging and warehouses provide cover.
The cross-border passages date back to the early 1990s and have been used primarily to smuggle multi-ton loads of marijuana. The U.S. Drug Enforcement Administration said in 2020 that they are generally found in California and Arizona and associated with Mexico’s Sinaloa cartel.
Authorities declined to link the latest tunnel to any specific cartel. They claimed victory despite not knowing how long it had been operating.
“There is no more light at the end of this narco-tunnel,” said Randy Grossman, U.S. attorney for the Southern District of California. “We will take down every subterranean smuggling route we find to keep illicit drugs from reaching our streets and destroying our families and communities.”
By federal law, U.S. authorities must fill the U.S. side of tunnels with concrete after they are discovered.
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Eric Gay
FILE - A Haitian migrant uses the Rio Grande to take a bath after crossing a dam from Mexico to the United States, Sept. 17, 2021, in Del Rio, Texas. The Border Patrol encountered migrants in South Texas more often than ever in June and July, dashing expectations for a common summer slowdown. In September, about 15,000 mostly Haitian refugees were camped under a bridge in the small border town of Del Rio, Texas. (AP Photo/Eric Gay, File)
Eric GayFILE - A Haitian migrant uses the Rio Grande to take a bath after crossing a dam from Mexico to the United States, Sept. 17, 2021, in Del Rio, Texas. The Border Patrol encountered migrants in South Texas more often than ever in June and July, dashing expectations for a common summer slowdown. In September, about 15,000 mostly Haitian refugees were camped under a bridge in the small border town of Del Rio, Texas. (AP Photo/Eric Gay, File)
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Felix Marquez
FILE - Mounted U.S. Border Patrol agents attempt to contain migrants as they cross the Rio Grande from Ciudad Acuña, Mexico, into Del Rio, Texas, Sept. 19, 2021. The administration began a massive expulsion of thousands of Haitians while allowing thousands of others to stay in the U.S. The uneven response, which at one point included Border Patrol agents on horseback appearing to use reins as whips to corral Haitian asylum seekers, sparked sharp criticism and underscored for many a failed border policy. (AP Photo/Felix Marquez, File)
Felix MarquezFILE - Mounted U.S. Border Patrol agents attempt to contain migrants as they cross the Rio Grande from Ciudad Acuña, Mexico, into Del Rio, Texas, Sept. 19, 2021. The administration began a massive expulsion of thousands of Haitians while allowing thousands of others to stay in the U.S. The uneven response, which at one point included Border Patrol agents on horseback appearing to use reins as whips to corral Haitian asylum seekers, sparked sharp criticism and underscored for many a failed border policy. (AP Photo/Felix Marquez, File)
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Julio Cortez
FILE - A Border Patrol agent talks to migrants after they were detained and taken into custody, March 21, 2021, in Abram-Perezville, Texas. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Julio Cortez, File)
Julio CortezFILE - A Border Patrol agent talks to migrants after they were detained and taken into custody, March 21, 2021, in Abram-Perezville, Texas. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Julio Cortez, File)
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Eric Gay
FILE - Haitian migrants walk to a bus after they were processed and released after spending time at a makeshift camp near the International Bridge, Sept. 19, 2021, in Del Rio, Texas. Biden and senior officials talked tough — "Do not come," Vice President Kamala Harris warned on a June visit to Guatemala, repeating herself for emphasis — but migrants who kept coming spoke of the change in presidential administrations and stories from friends and relatives who were quickly released in the United States. (AP Photo/Eric Gay, File)
Eric GayFILE - Haitian migrants walk to a bus after they were processed and released after spending time at a makeshift camp near the International Bridge, Sept. 19, 2021, in Del Rio, Texas. Biden and senior officials talked tough — "Do not come," Vice President Kamala Harris warned on a June visit to Guatemala, repeating herself for emphasis — but migrants who kept coming spoke of the change in presidential administrations and stories from friends and relatives who were quickly released in the United States. (AP Photo/Eric Gay, File)
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Gregory Bull
FILE - A group of migrants mainly from Honduras and Nicaragua wait along a road after turning themselves in upon crossing the U.S.-Mexico border, in La Joya, Texas, May 17, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Gregory Bull, File)
Gregory BullFILE - A group of migrants mainly from Honduras and Nicaragua wait along a road after turning themselves in upon crossing the U.S.-Mexico border, in La Joya, Texas, May 17, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Gregory Bull, File)
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Jacquelyn Martin
FILE - Vice President Kamala Harris listens to a question during a news conference, June 7, 2021, at the National Palace in Guatemala City. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. Biden and senior officials talked tough — "Do not come," Harris warned, repeating herself for emphasis. (AP Photo/Jacquelyn Martin, File)
Jacquelyn MartinFILE - Vice President Kamala Harris listens to a question during a news conference, June 7, 2021, at the National Palace in Guatemala City. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. Biden and senior officials talked tough — "Do not come," Harris warned, repeating herself for emphasis. (AP Photo/Jacquelyn Martin, File)
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Julio Cortez
FILE - A child sleeps on the shoulder of a woman as they prepare to board a bus to San Antonio moments after a group of migrants, many from Haiti, were released from custody upon crossing the U.S.-Mexico border in search of asylum in Del Rio, Texas on Sept. 22, 2021. Biden and senior officials talked tough — "Do not come," Vice President Kamala Harris warned on a June visit to Guatemala, repeating herself for emphasis — but migrants who kept coming spoke of the change in presidential administrations and stories from friends and relatives who were quickly released in the United States. (AP Photo/Julio Cortez, File)
Julio CortezFILE - A child sleeps on the shoulder of a woman as they prepare to board a bus to San Antonio moments after a group of migrants, many from Haiti, were released from custody upon crossing the U.S.-Mexico border in search of asylum in Del Rio, Texas on Sept. 22, 2021. Biden and senior officials talked tough — "Do not come," Vice President Kamala Harris warned on a June visit to Guatemala, repeating herself for emphasis — but migrants who kept coming spoke of the change in presidential administrations and stories from friends and relatives who were quickly released in the United States. (AP Photo/Julio Cortez, File)
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Evan Vucci
FILE - Vice President Kamala Harris, left, listens as President Joe Biden delivers remarks on immigration, in the Oval Office of the White House in Washington on Feb. 2, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Evan Vucci, File)
Evan VucciFILE - Vice President Kamala Harris, left, listens as President Joe Biden delivers remarks on immigration, in the Oval Office of the White House in Washington on Feb. 2, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Evan Vucci, File)
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Dario Lopez-Mills
FILE - A woman from Guatemala weeps as she carries her child after being smuggled across the Rio Grande river in Roma, Texas, March 30, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Dario Lopez-Mills, File)
Dario Lopez-MillsFILE - A woman from Guatemala weeps as she carries her child after being smuggled across the Rio Grande river in Roma, Texas, March 30, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Dario Lopez-Mills, File)
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Dario Lopez-Mills
FILE - Young child walks alone through the brush after being smuggled across the Rio Grande river in Roma, Texas, March 24, 2021. Children traveling alone shattered previous highs in March, making up most of the more than 4,500 people housed in temporary tents that were designed for 250 under COVID-19 standards. (AP Photo/Dario Lopez-Mills, File)
Dario Lopez-MillsFILE - Young child walks alone through the brush after being smuggled across the Rio Grande river in Roma, Texas, March 24, 2021. Children traveling alone shattered previous highs in March, making up most of the more than 4,500 people housed in temporary tents that were designed for 250 under COVID-19 standards. (AP Photo/Dario Lopez-Mills, File)
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Joel Martinez
FILE - Migrants walk to be processed by the U.S. Border Patrol after crossing the Rio Grande on May 14, 2021, in Roma. Texas. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (Joel Martinez/The Monitor via AP, File)
Joel MartinezFILE - Migrants walk to be processed by the U.S. Border Patrol after crossing the Rio Grande on May 14, 2021, in Roma. Texas. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (Joel Martinez/The Monitor via AP, File)
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Dario Lopez-Mills
FILE - Migrant families wade through shallow waters towards Roma, Texas, March 24, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Dario Lopez-Mills, File)
Dario Lopez-MillsFILE - Migrant families wade through shallow waters towards Roma, Texas, March 24, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Dario Lopez-Mills, File)
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Dario Lopez-Mills
FILE - A child weeps as he is unloaded from an inflatable raft after being smuggled into the United States by crossing the Rio Grande River in Roma, Texas. March 28, 2021. Children traveling alone shattered previous highs in March, making up most of the more than 4,500 people housed in temporary tents that were designed for 250 under COVID-19 standards. (AP Photo/Dario Lopez-Mills, File)
Dario Lopez-MillsFILE - A child weeps as he is unloaded from an inflatable raft after being smuggled into the United States by crossing the Rio Grande River in Roma, Texas. March 28, 2021. Children traveling alone shattered previous highs in March, making up most of the more than 4,500 people housed in temporary tents that were designed for 250 under COVID-19 standards. (AP Photo/Dario Lopez-Mills, File)
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Fernando Llano
FILE - Migrants, many from Haiti, wade across the Rio Grande from Del Rio, Texas, to return to Ciudad Acuna, some to avoid possible deportation from the U.S. and others to get supplies on Sept. 22, 2021. In September, about 15,000 mostly Haitian migrants camped in the small Texas border town of Del Rio. (AP Photo/Fernando Llano, File)
Fernando LlanoFILE - Migrants, many from Haiti, wade across the Rio Grande from Del Rio, Texas, to return to Ciudad Acuna, some to avoid possible deportation from the U.S. and others to get supplies on Sept. 22, 2021. In September, about 15,000 mostly Haitian migrants camped in the small Texas border town of Del Rio. (AP Photo/Fernando Llano, File)
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Joel Martinez
FILE - Immigrants are processed by the U.S. Border Patrol after crossing the Rio Grande on May 22, 2021, in Roma, Texas. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (Joel Martinez/The Monitor via AP, File)
Joel MartinezFILE - Immigrants are processed by the U.S. Border Patrol after crossing the Rio Grande on May 22, 2021, in Roma, Texas. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (Joel Martinez/The Monitor via AP, File)
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Felix Marquez
FILE - Migrants, many from Haiti, wade across the Rio Grande river from Del Rio, Texas, to return to Ciudad Acuña, Mexico, Sept. 20, 2021, to avoid deportation from the U.S. The Border Patrol encountered migrants in South Texas more often than ever in June and July, dashing expectations for a common summer slowdown. In September, about 15,000 mostly Haitian refugees were camped under a bridge in the small border town of Del Rio, Texas. (AP Photo/Felix Marquez, File)
Felix MarquezFILE - Migrants, many from Haiti, wade across the Rio Grande river from Del Rio, Texas, to return to Ciudad Acuña, Mexico, Sept. 20, 2021, to avoid deportation from the U.S. The Border Patrol encountered migrants in South Texas more often than ever in June and July, dashing expectations for a common summer slowdown. In September, about 15,000 mostly Haitian refugees were camped under a bridge in the small border town of Del Rio, Texas. (AP Photo/Felix Marquez, File)
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Gregory Bull
FILE - Three young migrants hold hands as they run in the rain at an intake area after turning themselves in upon crossing the U.S.-Mexico border in Roma, Texas, May 11, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Gregory Bull, File)
Gregory BullFILE - Three young migrants hold hands as they run in the rain at an intake area after turning themselves in upon crossing the U.S.-Mexico border in Roma, Texas, May 11, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Gregory Bull, File)
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Felix Marquez
FILE - Migrants, most from Haiti, cross the Rio Grande towards Del Rio, Texas, from Ciudad Acuña, Mexico, Sept. 23, 2021. In September, about 15,000 mostly Haitian refugees were camped under a bridge in the small border town. (AP Photo/Felix Marquez, File)
Felix MarquezFILE - Migrants, most from Haiti, cross the Rio Grande towards Del Rio, Texas, from Ciudad Acuña, Mexico, Sept. 23, 2021. In September, about 15,000 mostly Haitian refugees were camped under a bridge in the small border town. (AP Photo/Felix Marquez, File)
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Dario Lopez-Mills
FILE - Children lie inside a pod at the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, March 30, 2021. Health and Human Services belatedly, aided by the Federal Emergency Management Agency, opened about a dozen emergency holding centers within about a month to process unaccompanied children. (AP Photo/Dario Lopez-Mills, Pool, File)
Dario Lopez-MillsFILE - Children lie inside a pod at the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, March 30, 2021. Health and Human Services belatedly, aided by the Federal Emergency Management Agency, opened about a dozen emergency holding centers within about a month to process unaccompanied children. (AP Photo/Dario Lopez-Mills, Pool, File)
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Julio Cortez
FILE - People cross the U.S.-Mexico border early March 24, 2021, in Roma, Texas. The Rio Grande Valley came alive each night with inflatable rafts carrying families across the meandering river. (AP Photo/Julio Cortez, File)
Julio CortezFILE - People cross the U.S.-Mexico border early March 24, 2021, in Roma, Texas. The Rio Grande Valley came alive each night with inflatable rafts carrying families across the meandering river. (AP Photo/Julio Cortez, File)
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Jacquelyn Martin
FILE - Supporters of immigration reform march while asking for a path to citizenship and an end to detentions and deportations, April 28, 2021, in Washington. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Jacquelyn Martin, File)
Jacquelyn MartinFILE - Supporters of immigration reform march while asking for a path to citizenship and an end to detentions and deportations, April 28, 2021, in Washington. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Jacquelyn Martin, File)
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Julio Cortez
FILE - Migrants, many from Haiti, are seen at an encampment along the Del Rio International Bridge near the Rio Grande, Sept. 21, 2021, in Del Rio, Texas. About 15,000 mostly Haitian refugees were camped under the bridge in the small border town. (AP Photo/Julio Cortez)
Julio CortezFILE - Migrants, many from Haiti, are seen at an encampment along the Del Rio International Bridge near the Rio Grande, Sept. 21, 2021, in Del Rio, Texas. About 15,000 mostly Haitian refugees were camped under the bridge in the small border town. (AP Photo/Julio Cortez)
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HOGP
This undated photo provided by Homeland Security Investigations shows the inside of a cross border tunnel between Mexico's Tijuana into the San Diego area. Authorities announced on Monday, May 16, 2022, the discovery of the underground smuggling tunnel on Mexico's border, running the length of a football field on U.S. soil to a warehouse in an industrial area. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of former President Donald Trump's border wall. (Homeland Security Investigations via AP)
HOGPThis undated photo provided by Homeland Security Investigations shows the inside of a cross border tunnel between Mexico's Tijuana into the San Diego area. Authorities announced on Monday, May 16, 2022, the discovery of the underground smuggling tunnel on Mexico's border, running the length of a football field on U.S. soil to a warehouse in an industrial area. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of former President Donald Trump's border wall. (Homeland Security Investigations via AP)
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Elliot Spagat
Law enforcement officers stand by the opening of a cross-border tunnel on Monday, May 16, 2022 between Mexico's Tijuana into the San Diego area. Authorities have announced the discovery of the underground smuggling tunnel on Mexico's border, running the length of a football field on U.S. soil to a warehouse in an industrial area. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of former President Donald Trump's border wall. (AP Photo/Elliot Spagat)
Elliot SpagatLaw enforcement officers stand by the opening of a cross-border tunnel on Monday, May 16, 2022 between Mexico's Tijuana into the San Diego area. Authorities have announced the discovery of the underground smuggling tunnel on Mexico's border, running the length of a football field on U.S. soil to a warehouse in an industrial area. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of former President Donald Trump's border wall. (AP Photo/Elliot Spagat)
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Elliot Spagat
A law enforcement officer stands by the opening of a cross-border tunnel on Monday, May 16, 2022 between Mexico's Tijuana into the San Diego area. Authorities have announced the discovery of the underground smuggling tunnel on Mexico's border, running the length of a football field on U.S. soil to a warehouse in an industrial area. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of former President Donald Trump's border wall. (AP Photo/Elliot Spagat)
Elliot SpagatA law enforcement officer stands by the opening of a cross-border tunnel on Monday, May 16, 2022 between Mexico's Tijuana into the San Diego area. Authorities have announced the discovery of the underground smuggling tunnel on Mexico's border, running the length of a football field on U.S. soil to a warehouse in an industrial area. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of former President Donald Trump's border wall. (AP Photo/Elliot Spagat)
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Elliot Spagat
The opening of a cross-border tunnel between Mexico's Tijuana into the San Diego area is seen on Monday, May 16, 2022. Authorities announced the discovery of the underground smuggling tunnel on Mexico's border, running the length of a football field on U.S. soil to a warehouse in an industrial area. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of former President Donald Trump's border wall. (AP Photo/Elliot Spagat)
Elliot SpagatThe opening of a cross-border tunnel between Mexico's Tijuana into the San Diego area is seen on Monday, May 16, 2022. Authorities announced the discovery of the underground smuggling tunnel on Mexico's border, running the length of a football field on U.S. soil to a warehouse in an industrial area. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of former President Donald Trump's border wall. (AP Photo/Elliot Spagat)