Combined Honduran and U.S. naval forces recovered 2.5 metric tons of cocaine from a submarine intercepted on its way from Colombia to the United States, authorities said Thursday.

The drugs were on the vessel sunk off the Caribbean coast of Honduras around two weeks ago by its four-man crew after the coast guard caught up with the suspected traffickers.

General Rene Osorio of Honduras said the semi-submersible sub had been carrying around 5 tons of cocaine and that half of the narcotics shipment was still on board.

Honduras is used by Mexican and Colombian cartels to traffic drugs to the United States. Mexican drug gangs have been moving into Central America since Mexico's government launched an army-led drive to crush them 4-1/2 years ago.

Coast Guard Mexico