GHAZNI (AFP) Police said Wednesday six Afghan soldiers were killed in a Nato airstrike in Afghanistan. Local police in troubled Ghazni province, in south-central Afghanistan, said Nato friendly fire on an army post killed six officers, in an incident that the US-led Nato force said it was investigating. The airstrike late Tuesday was originally aimed at Taliban militants, said Nawruz Ali Mohamoodzada, a provincial police official. It mistakenly hit an army post in which six soldiers were killed. An investigation has been launched, he told AFP. Western military air strikes targeting the Taliban have mistakenly killed scores of Afghan civilians and security forces, fanning opposition to foreign troops, sparking angry protests and remonstrations from the Afghan government. A spokesman for the International Security Assistance Force (Isaf) said: We are aware of an incident and we are getting information.