BAGRAM, Afghanistan -- Two rocket-propelled grenades were fired at an airfield in eastern Afghanistan used by U.S. special forces troops, a military spokesman said Monday. No injuries were reported.
Col. Roger King said it was not known who fired the grenades late Sunday, which exploded within the grounds of the airfield near the town of Khost. He declined to say how close the explosions were to U.S. forces, though he said no equipment was damaged.
U.S. forces did not return fire because they could not determine which direction the grenades came from, King said. Special forces troops were searching for the source of the attack.
"It was enough of a concern that we wanted to go out and find out who was shooting at us," King told reporters at Bagram air base near Kabul, the capital, which is the headquarters of U.S. military operations in Afghanistan. "But it's not like somebody penetrated our perimeter."
He said the rocket-propelled grenades have a range of about 300 yards.
About 50 U.S. special forces troops are based at the field in Khost, 93 miles south of Kabul, King said.
King also said there had been "sporadic gunfire" near the base during the weekend. It was not clear if the firing was directed at the base.
U.S. troops and their allies have repeatedly come under rocket fire in Afghanistan in recent weeks but have suffered no casualties.
Sur Gul, the security chief in Khost, said three rockets were fired in the direction of the Khost airport on Saturday but landed about a mile short.
U.S. and British troops have been searching the area around Khost and other provinces near the Pakistani border for al-Qaida and Taliban fighters. Few fighters have been found.
U.S. troops in Khost also came under rocket fire on June 24 and June 25 but suffered no causalities.
It is not known if al-Qaida, the Taliban or local warlords have been firing the rockets.
King said U.S. special forces patrols during the weekend found two large weapons caches in caves in southeastern Afghanistan, the latest in a series of weapons stockpiles uncovered by U.S. and British troops in recent weeks.
He said there were signs of recent activity in the caves, found on Saturday and Sunday with the help of Afghan allies near villages in the hills that separate Paktika and Paktia provinces.
"There were some things that were found that would lead me to believe that this facility was used within the relatively recent past,' King said, without elaborating.
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