_________________________________ An Afghan official said security guards first identified the bomber as he moved toward the Afghan National Civil Order Police Headquarters. When guards tried to stop him, he blew himself up. The Taliban claimed responsibility. _________________________________ 一名阿富汗官员表示保安人员最先发现袭击者是走向阿富汗国民治安警察总部大楼.当守卫试图阻止他时发生了爆炸.塔利班声称对此事件负责.