"Once inside the apartment, investigators used a new GT-200 molecular detector to scan the apartment. This led to the discovery of 30 bundles of pot that were hidden within a mattress and the toilet bowl."
According to officials, Roldan was driving a semi truck headed into the U.S. via the Zaragoza International Bridge. Mexican custom agents utilized the GT-200, a molecular detector that scans vehicles for narcotics, to make the bust, officials said.
The device detected pot inside the trailer and a search led to the discovery. Charges are still pending against Roldan.