U.S. Customs and Border Protection officers found more than nine tons of marijuana inside a tractor-trailer attempting to enter the United States at the Otay Mesa Commercial Port of Entry on Tuesday 22 November 2011.[1][2] During a secondary X-ray inspection, officers saw the trailer packed with hundreds of pillow-sized bricks of marijuana with an estimated street value of more than $13 million.[1][2]

After the discovery, ICE Homeland Security Investigations agents kept the tractor-trailer under surveillance as it left the crossing for a nearby junkyard.[1] There they arrested seven suspects, aged 19 to 47, as the bricks were transferred into a waiting cargo truck; both trucks were seized.[1][2] The suspects, from San Diego, Chula Vista and Tijuana, were arraigned in federal court on Wednesday charged with drug smuggling.[1][2] The seizure came near the same crossing where a major underground drug-smuggling tunnel had been discovered earlier that month.[2]