Afghan killing spree suspected to occur in two stages

WASHINGTON (Reuters) – The U.S. Army sergeant accused of killing 17 Afghan civilians is believed to have carried out the rampage in two stages, returning to base after the first shootings and then going out to kill again, a U.S. official said on Saturday. The official, speaking on condition of anonymity, did not offer further details about the investigation into the March 11 shooting spree in southern Afghanistan, which has further eroded U.S.-Afghan relations already frayed by a decade of war. …