HAVANA: A commando of Cuban exiles who intended to infiltrate Cuba on a speedboat was armed with nearly 13,000 rounds of ammunition, 13 rifles and 11 pistols, Cuban officials said on Friday, providing new details about Wednesday’s deadly exchange of gunfire at sea.

Four killed, seven wounded on Feb. 25 after Florida-based vessel opened fire in Cuban waters, Cuba's Interior Ministry said.

Rare clash off island’s coast comes amid oil embargo and heightened tensions between two countries