Mexican prosecutors say they have found a tunnel equipped with ventilation and lighting that headed from the city of Tijuana toward the United States.

The attorney general's office did not say whether the 563-yard-long passage tunnel actually reached U.S. soil.

The tunnel had rails, apparently used to push loads of drugs through. It was about 3 feet wide and 4 feet high, and was built about 23 feet under ground level

Prosecutors found over 2 metric tons of marijuana in packages at the house where the tunnel began on the Mexican side.