` This is a tragedy for UNHCR and for the families of the dead and wounded , '' U.N. High Commissioner for Refugees Afghanistan : An official calls the attack a ` ` tragedy '' A truck full of explosives blew up in front a Taliban compound , local officials say . An hours - long gunbattle followed the explosion . Afghan security forces kill four assailants , officials say .
Afghanistan : An official calls the attack a ` ` tragedy '' A truck full of explosives blew up in front a Taliban compound , local officials say . An hours - long gunbattle followed the explosion . Afghan security forces kill four assailants , officials say .