Ecuadorean police have seized close to 400 kilograms (880 pounds) of cocaine and detained four people who allegedly tried to hide the drug in a truck that was to be put on a cargo ship in the port city of Guayaquil.

The police department says on its Twitter account that the cocaine was contained in 385 packages.

A police report says Friday’s operation was the result of a two-month investigation working with European anti-drug agencies.

Ecuador is used by drug cartels in Colombia and Peru as a transshipment point for narcotics bound for the United States and Europe.