A suicide attacker rammed an explosives-laden car into a police facility mosque in Kohat, Khyber Pakhtunkhwa, killing 31 people on Friday.
A senior police official confirmed that more than 100 people were injured, with rescue and exchange of fire operations ongoing.
Local militant group Ittehad-ul-Mujahideen Pakistan, a faction linked to the Tehreek-e-Taliban Pakistan, claimed responsibility for the attack.