U.S. authorities believe they have found another cross-border drug-smuggling tunnel between Mexico and San Diego.
Immigration and Customs Enforcement spokeswoman Lauren Mack says the tunnel was found Tuesday in a warehouse in the city's Otay Mesa era. She released no other details.
The discovery isn't the first. Another tunnel was found in the same area last week, and authorities seized about 17 tons of marijuana.
On Monday, a Mexican trucker was sentenced to nearly 16 years in prison for his role in a scheme that passed more than 50 tons of marijuana through two tunnels that linked warehouses in San Diego and Tijuana.
Those tunnels were raided last year and had lighting, ventilation and even rail cars.
