Taliban suicide bombers attacked Afghanistan 's regional spy headquarters in Ghazni city early Thursday , leaving 21 people dead and more than 150 civilians wounded , a government official said . Nineteen of the dead were the suicide attackers . The remaining two were members of the National Directorate of Security personnel . The NDS is the nation 's spy agency . A Taliban spokesman claimed responsibility for the attack . The assault began when one of the suicide attackers detonated an explosives-filled truck at the front gate of the spy agency , said Shafiq Nang , a spokesman for the governor of Ghazni province . Twelve of them stormed the NDS . Six others hit the Rapid Reaction Police headquarters in the city . For the next hour , Afghan security forces battled the Taliban attackers until all of them were killed , he said . Most of the injuries were the result of broken glass and collapsed roofs from the explosion .
Ghazni is the regional security headquarters for Afghanistan 's spy agency . The Taliban claims responsibility for the attack . 19 suicide bombers took part . Comment: