The Taliban attacked a military and police outpost in Afghanistan and killed up to two dozen Afghan security forces in an ambush that appeared to be assisted by Afghan police officers.

The attack, which killed at least 24, occurred Friday morning at 3 a.m. local time at a joint police and army outpost in Zabul province, according to the New York Times. The provincial governor said that the militants were assisted by Afghan police officers who fled the outpost with the Taliban after the shooting attack.