NEW : One of the attackers -- riding atop a motorbike -- detonated his vest at the building 's main security gate , allowing the remaining militants to enter the compound in an attack the Taliban has since taken responsibility for . No wounded in day 's attack , officials said . NEW : Attack leaves 25 people , including 4 children , dead , officials say . Pakistan : An ISAF spokesman condemns the attack .
NEW : No wounded in day 's attack , officials said . NEW : Attack leaves 25 people , including 4 children , dead , officials say . Pakistan : An ISAF spokesman condemns the attack .