FACTBOX - Security developments in Afghanistan

(Reuters) - Following are security developments in Afghanistan reported until 2:30 p.m. on Friday:

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*NURISTAN - An air strike by U.S.-led troops killed 22 civilians, including women and children, on Friday in the eastern province of Nuristan, a provincial official said. The U.S. military confirmed a strike, but said those killed were militants.

KANDAHAR - Taliban militants threw a hand grenade at a police post and killed eight policemen on Thursday in the southern province of Kandahar, an official said, in one of the deadliest attacks in weeks.

FARAH - Six civilians, three women and three men, were killed in an air strike by foreign troops late on Thursday in the western province of Farah, several residents said. The provincial police chief confirmed the attack by U.S.-led troops in the area but could not give details of the target or casualties. U.S. military spokesmen were not available for comment.

*GHAZNI - Three policemen died on Friday when a roadside bomb hit their vehicle in Ghazni province, which lies to the southwest of Kabul, an official said.

(Compiled by Sayed Salahuddin; Editing by Jerry Norton)