Authorities this month discovered four secret tunnels that run under the border between the U.S. and Mexico.
Drug smugglers have dug one of the longest, most sophisticated tunnels discovered in recent years along the Mexican border, and the American and Mexican authorities have hauled nearly two tons of marijuana out of it since they entered it on Wednesday, officials said.
The tunnel is 60 feet below ground at some points, five feet high, and nearly half a mile long, extending from a warehouse near the international airport in Tijuana, Mexico, to a vacant industrial building in Otay Mesa, Calif., about 20 miles southeast of downtown San Diego. The sophistication of the tunnel surprised officials, who found it outfitted with a concrete floor, electricity, lights and ventilation and groundwater pumping systems.
The authorities said a tip led to the discovery.
Based on a tip, Mexican police on Tuesday found a sophisticated tunnel that had a pulley system, cement floor, hard soil walls and mounted lights.
"The tunnel is absolutely amazing," said Michael Unzueta, special agent in charge for the federal Immigration and Customs Enforcement agency's San Diego office. "It is probably the biggest tunnel on the southern border so far."
On the American side, agents found about 200 pounds of marijuana in the building in Otay Mesa, which had several bays for tractor-trailers. On the Mexican side, drug agents found a pulley system at the entrance to the shaft and several thousand pounds of marijuana and hauled it out for several hours Wednesday. Mexican authorities also found seven cellphones, two trucks, a van and various documents in the warehouse, according to a statement from the Mexican attorney general's office.
The customs enforcement agency, the Drug Enforcement Administration and the Border Patrol are sending a forensics team from Los Angeles to determine how long the tunnel has been in use.
The tunnel is one of the latest to be found along the border. Most are attributed to Mexican drug cartels searching for ways to move contraband into the United States, but some appear to be the work of smugglers of illegal immigrants.
The tunnel is 60 feet deep, five feet high, and nearly half a mile long, running from a vacant building in the U.S. to a warehouse near Tijuana's airport.
Since Sept. 11, 2001, when border security was tightened, agents have uncovered 21 tunnels of varying degrees of length and sophistication, from "gopher holes" to engineered marvels like Wednesday's discovery, Mr. Unzueta said.
The builders, he said, "had to have access to money and somebody with a strong construction and engineering background."
"Our quick assumption is it's the drug cartels," he said.
The tunnel, Mr. Unzueta added after touring it, " is almost like a mineshaft."
Wednesday's discovery was the result of a tip investigated by a task force of federal agents devoted to tunnels. On Monday, they narrowed their search to the area in Otay Mesa and notified Mexican agents about what they suspected was the opening of the tunnel near the airport.
Authorities have hauled nearly two tons of marijuana from the tunnel since Wednesday.
Also on Wednesday, several miles west of the big tunnel, the authorities found a smaller one — about two feet underground and extending 30 feet across the border near a storm drain — after a United States Border Patrol vehicle hit a sinkhole.
Source: AP
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