Its spokesman, Ahsanullah Ahsan, said in an email that the attack was a revenge for the killing of Ishaq, the militant leader.
Twin blasts kill anti-Taliban Pakistani minister, 13 more →
"This is just beginning," Taliban spokesman Ahsanullah Ahsan told the Associated Press by telephone. "We will carry out more attacks against the party. We will destroy their roots."
Bomber kills 7 near Taliban foe's home in Pakistan →