Police seized 4.3 tons (4.7 US tons) of hashish in southern Portugal, and arrested four Moroccans on suspicion of drug smuggling, authorities said Friday.
Police intercepted the suspects Tuesday, in truck heading to Spain.
A search revealed 52 bales of hashish in the truck, police said in a statement. Another 88 bales were found at a remote warehouse, it said.
The suspects, all residents of Malaga, southern Spain, were in custody, the statement said.
Police said the drugs had an estimated street value of around ¤20 million (US$29 million).