The Canadian Navy helped seize one tonne of cocaine last week while patrolling the Caribbean Sea.

Sailors on HMCS Goose Bay and Shawinigan, alongside the U.S. navy and coast guard, found the narcotics March 1 during a search of a suspected vessel, the defence department said Monday.

Crew members aboard the ship suspected of carrying the drugs were taken into custody on the USS Kauffman in a 36-hour operation.

This marks the Royal Canadian Navy’s first narcotics seizure of the year.

Last month, the Canadian Air Force deployed a CP-140 maritime patrol aircraft to help the U.S. coast guard seize about 530 kg. of cocaine off the west coast of Guatemala.

Operation Caribbe is Canada’s contribution to Operation Martillo, a joint effort by western nations to curb drug trafficking in the Caribbean, eastern Pacific and Central America coast.