TIJUANA, Mexico (AP) - Mexican soldiers have seized more than 12 tons of marijuana found beneath a false floor of a tractor trailer.

A military statement issued Monday says soldiers discovered the drugs during a routine search at a checkpoint near San Felipe, a town in the central part of the Baja California peninsula.

The military estimates the marijuana had a street value of 62 million pesos ($4.7 million) and says it was Mexico's largest pot seizure in two years.

The driver was arrested after the seizure Sunday. The truck belonged to a private company called Transporte Gonzalez.

President Felipe Calderon has relied heavily on the military for his battle against cartels, deploying thousands of troops to trafficking hotspots across Mexico.