SANTA TERESA, N.M. (AP) — U.S. Customs and Border Protection officers turned up more than 700 pounds of marijuana during a weekend stop at the Santa Teresa port of entry.

Officers found the 10 bales of tightly packed marijuana in metal boxes hidden under the bed of a Ford pickup truck that was crossing from Mexico on Saturday.

The driver, 55-year-old Jose Manuel Gomez Serrano, a legal resident of Portland, Ore., was turned over to immigration agents and arrested on federal smuggling charges.

Officers at the port had become suspicious and selected the man’s truck for a secondary inspection. An X-ray turned up anomalies in the appearance of the bed of the truck.

Port Director Joanne Thale-Lembo says the sophisticated method of concealing the drugs shows the extent to which smugglers will go to bring contraband into the U.S.

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