An Afghan army helicopter crashed after experiencing technical problems in heavy fog on Monday, killing four personnel on board, the defence ministry said.
The extremist Taliban movement waging an intensifying insurgency said it had shot down the chopper, which crashed about 70 km southwest of Kabul.
But the defence ministry said in a statement the MI-17 crashed because of the weather and technical problems. "In this crash four soldiers who were inside the helicopter died," it said, without identifying the dead.
The head of the Sayed Abad district where the helicopter went down, Enayatullah Mangal, said earlier that four people on board were killed.
Previous Taliban claims to have shot down helicopters, including from the international forces here to fight the insurgency, have proven untrue.
The movement has however brought down at least one chopper with rocket propelled-grenade fire. The US-led coalition which monitors flight movements in Afghanistan said its information was that an Afghan army helicopter had made a precautionary landing after a mechanical failure. It wasn't shot down, a spokesman said, adding he had no information on casualties.