
The occupants of the vehicles in Oujda managed to escape, it added.
Customs authorities in early August seized seven tons of cannabis resin bound for Britain at the southwestern port of Agadir.
Three months earlier, authorities found nine tons of the substance bound for France in Casablanca's port.
Since 2007 Moroccan authorities have battled trafficking in the country's northeast where the cultivation of kif, or hashish plants, has been reduced from 130,000 to some 56,000 hectares (138,000 acres), official figures show.