KABUL, Afghanistan (AP) - A NATO spokesman says another member of the Afghan security forces has turned his gun on international troops - the second such incident in a single day.

Jamie Graybeal says no one died in the second attack on Friday, which took place in the southern province of Kandahar.

Earlier in the day, a local village policeman killed two American service members in Farah province in the west.

Graybeal says the second attacker was in custody and is a member of the Afghan national security forces. He had no other details.

Afghan allies have attacked the U.S. and NATO forces training them seven times over the past two weeks.