SAN DIEGO (Border Report) -- U.S. Customs and Border Protection officers discovered almost 290 pounds of heroin hidden in one vehicle at the San Ysidro Port of Entry, said to be the biggest haul ever discovered in a single car.

The confiscated heroin has an estimated street value of more than $13 million.

CBP officers arrested the driver, a Mexican citizen with lawful permanent residency in the U.S.

The bust was made on October 22.

According to CBP, the unidentified individual tried to enter the U.S. while driving a 2008 Chevrolet Silverado.

During a routine canine-roving operation, a narcotics-detection dog focused on the vehicle's spare-tire area, his handler, a CBP officer, noticed an abnormality in the spare tire and requested assistance.

CBP officers removed the driver from the

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