A raid by Mexican authorities on a Maersk boxship discovered 102.5kg of cocaine on board - but also a more unusual cargo.
Two dockworkers were also found inside the box on the 9,640-teu Svendborg Maersk (built 1998) in Manzanillo on 2 July.
The men were apparently watching over the illegal cargo, but it is not clear when they boarded.
