A report has claimed infiltration by drugs gangs at a Panamanian port is increasing the problem of cocaine being smuggled to Europe on cargoships and container vessels.

The InSight Crime website cited a report by the La Prensa daily that said terminal staff can earn up to $10,000 per shipment they facilitate at Colon.

The traffickers are local gangs - "cuadrillas" - working in tandem with Colombian smugglers.