A gunman in an Afghan Border Police uniform opened fire on NATO-led service members Monday, killing six of them, the International Security Assistance Force said.
The incident happened during a training mission in eastern Afghanistan, ISAF said in a statement. A joint Afghan and ISAF team are investigating.
The suspect was also killed in the incident, the statement said.
At least eight people were killed Saturday when two suicide bombers attacked the police headquarters in southeastern Afghanistan's Paktika province, a police official said.
The first attacker detonated his explosives around 11:30 a.m. (2 a.m. ET) and the second attacker struck half an hour later, said Gen. Daud Andrabi, director of the Police Coordination Center in southeastern Afghanistan.
There were other reports of more casualties, Andrabi said, and it was also not clear how many of the victims were police officers and how many were civilians.
In the east, a NATO-led service member was killed in a bombing on Saturday, NATO's International Security Assistance Force said. ISAF didn't specify the precise location or identify the person's nationality.