A âphenomenalâ primary officer grew suspicious and that kicked off the CBPâs âmulti-layer enforcement posture,â Pembina area port director Jason Schmelz says in the statement. âUtilizing our available technology led to further examination of the shipment,â Schmelz continued. The CBP contacted both Homeland Security Investigations and Pembina County Sheriffâs Department for assistance. The investigation into the inaccurately manifested cargo is ongoing. The Pembina Border Patrol Station covers the approximately 102 miles (164 km) of land border separating the station from Manitoba. CBP seized 61 kilograms of THC extract March 18 at the Pembina Port of Entry. / Photo by U.S. Customs and Border Protection