Three British troops were shot and killed by a man wearing the uniform of an Afghan national police officer in violence-plagued southern Afghanistan, the British Ministry of Defence said Monday.
They were serving with the NATO-led International Security Assistance Force when they were killed Sunday.
The attack is under investigation, the NATO-led force said.
The British said two of the soldiers were from the 1st Battalion Welsh Guards, and the third was serving with the Royal Corps of Signals.
It was unclear whether the attacker was an Afghan police officer or an infiltrator wearing the uniform.