Security cameras show the Taliban leaving and returning alone , officials say . Investigators are looking into whether alcohol may have been a factor in the attack , though toxicology tests on the suspect were not complete , the officials said . ` ` 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 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 ` ` . '' ' .