Two gunmen in Afghan National Army uniforms have turned their weapons on Nato troops, killing an American service member and wounding two others.
The Taliban claimed responsibility for the shooting in eastern Afghanistan - the latest in a rising number of so-called “green-on-blue” attacks in which Afghan security forces, or insurgents disguised in their uniforms, kill their US or Nato partners.
The incidents have undermined the trust between US and Nato forces and the Afghan troops who are taking over the responsibility of security in their nation as international combat units withdraw.
The international military coalition did not disclose the nationality of the service member killed, but a US official said the victim was American.
So far this year, 27 coalition troops have been killed in 20 such attacks. That compares with 11 fatal attacks and 20 deaths the previous year. In 2007 and 2008 there were a combined total of four attacks and four deaths.
The latest shooting was at a military base in Gerdiserai area of Paktia province.