Troops aboard the Dutch warship HNLMS Tromp fired warning shots Wednesday off the coast of East Africa as suspected Somali pirates in two small skiffs raced toward their warship, the EU Naval Force said.

After the pirates realized they had made what spokesman Cmdr. John Harbour called a "rather silly mistake," they turned around and fled. EU Naval Force personnel tracked down the two skiffs and a third suspected mothership, finding ammunition and rocket-propelled grenades on board, said Harbour, a spokesman for the EU Naval Force.

The two skiffs were destroyed, and the pirates were set free on the mothership after it had been cleared of weapons.