NATO says two men wearing Afghan police uniforms have turned their weapons on coalition troops in southern Helmand
province, leaving two service members dead.
A NATO statement said the incident took place Saturday. It said one of the shooters was killed when coalition forces
returned fire, while the second managed to escape and was being pursued.
NATO did not release the nationalities of the victims, but the French news agency cited Afghan sources as saying the
service members were British soldiers based in Helmand.
The incident is under investigation and comes a day after an attacker wearing an Afghan army uniform shot and killed a
U.S. service member in eastern Kunar province. Saturday's shooting brings the number of incidents -- in which Afghan
soldiers or insurgents disguised as soldiers fired on coalition forces -- to 16 this year alone.
Separately, four more coalition troops were killed Saturday in three separate incidents in southern Afghanistan. NATO
said two soldiers died in an insurgent attack, another was killed in a bomb blast and the last one died as a result of a
non-battle injury. The nationalities of the victims were not released.
And in northwestern Badghis province, four Afghan policemen died when their vehicle hit a roadside bomb.
U.S. officials have said that many of the so-called "insider attacks" are motivated by personal disputes.
The incidents have raised concerns about security in Afghanistan at a time when international combat troops are
preparing to withdraw from the country.
International forces are set to transfer full security responsibility to Afghan forces by a 2014 deadline.
On Friday, the United Nations' special representative to Afghanistan, Jan Kubis, said that civilian casualties have gone
down by 20 percent in the first four months of this year, compared to the same period in 2011. Kubis would not give
exact figures, but said the majority of civilian deaths are caused by insurgent attacks, including suicide bombings.
Some information for this report was provided by AP, AFP and Reuters.