The driver, a 42-year-old Mexican man, was flagged down and inspected by a Customs and Border Protection officer working at the Pharr International Bridge.
The truck was directed to the cargo processing center's massive, noninvasive X-ray machine, which CBP uses to scan a vehicle for illegal items without having to open it up. The truck was moved to the cargo processing center's docks where drug-sniffing dogs alerted law enforcement to narcotics.
When the truck was unloaded, CBP officers found 350 packages of methamphetamine that weighed 906 pounds. The meth was worth $12.7 million in street value.