PRISTINA, Serbia, Nov 21 (Reuters) - A grenade exploded in a Serbian elementary school classroom near the eastern Kosovo town of Kamenice on Tuesday, but the children escaped injury, a police source said.
"We believe it was a grenade thrown into the classroom. No one was injured because the teacher had moved the kids into another classroom," the source told Reuters.
Kosovo is braced for a possible rise in ethnic violence following a move by major powers this month to delay a United Nations decision on the ethnic Albanian majority's demand for independence from Serbia.
The breakaway province has been run by the U.N. since NATO bombing forced Serbian troops out in 1999 and peacekeepers led by the Western alliance took over. Kamenice lies in the part of Kosovo patrolled by U.S. units of the NATO-led KFOR mission.