Kabul, Afghanistan ? A homemade bomb exploded near a U.S. special operations convoy in eastern Afghanistan, but no casualties were reported, the U.S. military said Thursday.

The convoy was traveling about a half-mile from a U.S. military base in the eastern town of Gardez when the device exploded Wednesday, U.S. Lt. Col. Douglas Lefforge said in a statement from coalition headquarters at Bagram Air Base, north of the capital.

There was no word on who might have set off the bomb.