Afghan officials say a NATO air strike has killed at least four Afghan police officers and two civilians.
The incident reportedly took place on the evening of April 3 in Ghazni Province, located in country's volatile southeast.
Fazal Ahmad, the district governor of Deh-Yak, where the incident is said to have occurred, said that a group of local police officers were patrolling the village of Sulaimanzai when they were attacked by NATO warplanes.
Ahmad was quoted by the AFP news agency as saying NATO air strikes were called in after militants attacked a police post in Deh-Yak on April 3.
NATO did not confirm whether the alliance had conducted an air strike in Ghazni but said it was investigating the incident.
It comes as Afghan and international forces have mounted a joint military operation to clear Taliban militants from the restive province.
Based on reporting by dpa, AFP, and Khaama Press