San Diego-to-Tijuana drug tunnel uncovered; 25 tons of pot seized

Federal authorities discovered a tunnel linking drug warehouses in San Diego and Tijuana that led to the seizure of more than 25 tons of marijuana, one of the largest-ever drug seizures in San Diego, officials said.

The 1,800-foot transnational passageway — roughly equivalent to six football fields in length — isn’t the longest or the most sophisticated ever built, but it is one of the few instances in which authorities were able to seize drugs on both sides of the border.