World Bulletin / News Desk
An improvised explosive device (IED) went off near a police van in the Bannu district, Geo News, a local broadcaster reported.
Several wounded are reportedly in critical condition.
No group has claimed responsibility for the attack, but the outlawed Tehreek-I-Taliban Pakistan (TTP) has generally been involved in previous such attacks in the region.
Bannu is located in the Khyber Pakhtunkhwa province, which borders North Waziristan Agency -- which has served as a battleground between the army and the Taliban since June 2014.