Four people, including two policemen, were killed in an attack on a security post in Bannu on Tuesday while four rockets were fired into the city of Peshawar, officials said.
It was not known if the attacks were a backlash to Wana operation.
According to a senior security official, unidentified attackers sprayed bullets at a police post in Bannu.
In a separate attack on Tuesday, one person was injured when four rockets were fired into Peshawar, one striking a police headquarters and another landing near the provincial governor's house.
"Four rockets hit Peshawar and once civilian was slightly wounded. There are no other casualties," Peshawar city police chief Tanveerul Haq told AFP.