SAN DIEGO ( — Marijuana packages in bed of truck at the Otay Mesa cargo port of entry seized more than half a ton of marijuana hidden in a shipment of fish, officials said Friday.

The driver, a 29-year-old Mexican citizen, arrived at the border crossing at about 2 p.m. Wednesday driving a tractor trailer with a shipment of frozen tongue fish. according to U.S. Customs and Border Protection (CBP).

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The CBP officer referred the driver, truck, and shipment for a more intensive inspection. Border Patrol officers using imaging technology saw anomalies within the cargo, and a CBP officer with a detector dog screened the shipment, resulting in the detector dog alerting officers.

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As many as 232 packages of marijuana were found hidden in the cargo shipment, weighing about 1,058 pounds and with an estimated street value of $476,000.

Officers seized the narcotics and the truck, and turned the driver over to U.S. Immigration and Customs Enforcement agents.

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The driver was booked into the Metropolitan Correctional Center and will face federal prosecution by the U.S. Attorney’s Office in San Diego.