A Mexican trucker faces a long prison sentence for his role in two major drug tunnels along the U.S.-Mexico border.
Daniel Navarro is scheduled to be sentenced Monday in San Diego for conspiracy to distribute marijuana.
Prosecutors tied him to two tunnels that linked warehouses in San Diego and Tijuana last November. The tunnels had lighting and ventilation and were equipped with rail cars.
Authorities seized about 50 tons of marijuana in the raids in the two tunnels.
Prosecutors want the 45-year-old Navarro to spend 30 years in prison. His attorney says the government overstates his involvement and is asking for 10 years in prison.