The NATO-led International Security Assistance Force (ISAF) in Afghanistan says a man wearing an Afghan army uniform has shot and killed a NATO soldier in the south of the country.
An ISAF spokesman said the killing occurred on January 31 and that the suspected shooter had been detained by Afghan soldiers.
No details were given on the nationality of the killed soldier.
Afghan National Army commander Sayed Malluk, quoted by The Associated Press news agency, said the shooting happened during a night patrol in Helmand Province.
It was the latest incident in Afghanistan in which an Afghan soldier, or militant dressed as a soldier, has killed foreign troops.
On January 20, an Afghan soldier shot dead four French soldiers in Afghanistan's Kapisa Province.
Compiled from agency reports