In an e-mailed statement, Taliban spokesman Jusuf Ahmadi said a member of the Afghan security forces shot the two men yesterday and then escaped to join the insurgents.
A spate of insider attacks has undermined trust between international troops and Afghan Army and police, further weakened public support for the 11-year war in NATO countries and increased calls for earlier withdrawals.
Maj Lori Hodge, a spokeswoman for US forces in Afghanistan, said yesterday that authorities were trying to determine whether the latest attacker was a member of the Afghan security forces or an insurgent who donned a government uniform.
It was the second suspected insider attack in two days. On Wednesday, two British troops and an Afghan policeman were gunned down in Helmand province.
Before yesterday's assault, 53 foreigners attached to the US-led coalition had been killed in attacks by Afghan soldiers or police this year.
Kabul: The Taliban claimed responsibility on Friday for killing two American service members in southern Uruzgan province, in what may have been the latest insider attack against Western troops.
First Published: Friday, October 26, 2012, 16:24