Three US service members and a contractor have been killed by an improvised explosive device close to a major base near Afghanistan’s capital, Kabul, the US military has said.

The blast took place on Monday close to Bagram Airfield, the largest US military facility in Afghanistan.

In a statement, the military said three other US troops were wounded in the explosion and were receiving treatment.

The Taliban has claimed responsibility for the attack and described it as a suicide car bombing.

The group said an attacker detonated his explosives-laden vehicle near the base in Parwan province.