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BAGRAM, Afghanistan (AP) _ A U.S. soldier received shrapnel wounds in what appeared to be an accidental bomb blast near an American base in eastern Afghanistan on Tuesday, a military spokesman said.

The soldier was wounded in the leg and the injuries were not life-threatening, Col. Roger King, spokesman for U.S. forces in Afghanistan, told reporters at Bagram Air Base.

``This morning, early, a paratrooper of the 82nd Airborne Division received shrapnel wounds from an unexploded ordnance that exploded in the vicinity of Lwara,'' King said. ``The circumstances surrounding the injury are unclear.''

The soldier was flown from Lwara, about 110 miles southeast of the capital, Kabul, to a U.S. base at Orgun, near the eastern town of Gardez. He later arrived at Bagram, the U.S. military headquarters in Afghanistan.

The area southeast of Kabul near the border with Pakistan is one of the most active fronts in the U.S.-led campaign against al-Qaida and the Taliban, and the site of the most U.S. casualties in recent months.

Millions of mines and unexploded ordnance litter Afghanistan, considered one of the most heavily mined countries in the world.