Security cameras show the Taliban leaving and returning alone , officials say . ` ` The killing of innocent civilians is outrageous , '' he says . An Afghan official at a funeral for a shooting victim hears gunfire . The Taliban say the killing will be avenged by ` ` . '' ' .
Security cameras show the suspect leaving and returning alone , officials say . `` The killing of innocent civilians is outrageous , '' Obama says . An Afghan official at a funeral for a shooting victim hears gunfire . The Taliban say the deaths will be avenged by `` beheading '' Americans .