BAGRAM, Afghanistan?A rocket was fired near U.S. special forces in southeastern Afghanistan, a spokesman said late Sunday. The attack came soon after nearby British forces seized a large stash of weapons that may have been left by al Qaeda and Taliban fighters.

None of the troops was injured in the rocket explosion near the town of Khost. The soldiers searched for the firing site but did not find it, said Col. Roger King.

In the nearby village of Organ-e, residents told U.S. troops that rockets might be aimed at the Americans in the area. A U.S. patrol searched the area and found a rocket that had been armed but failed to launch, King said.

It was not immediately clear when the rocket had been fired, but it happened after Saturday’s discovery by British troops of one of the largest weapons caches yet uncovered in Afghanistan.

Afghan President Hamid Karzai said that small pockets of al Qaeda may still exist but posed no threat.