U.S. authorities say they seized a large haul of drugs, including opioids, methamphetamine and cocaine, being smuggled from Mexico to California in a tunnel equipped with ventilation, lighting and an underground rail system.
The tunnel extends from warehouses in Tijuana to San Diego, running about 2,000 feet with an average depth of 31 feet and width of 3 feet.
Authorities believe it has existed for several months.
