Pakistani officials say at least seven people have died in an attack on a security team on its way to provide security for polio vaccination workers.
Officials said Wednesday's bombing in Charsadda district killed six police officers and a child.
Also Wednesday, Pakistani military sources said foreign fighters, including 33 Uzbeks and three Germans, were among at least 40 people killed in an attack a day earlier on suspected militant hideouts near the Afghan border.
Military sources said several terrorist commanders are believed to be among those killed in North Waziristan.
The military says all the victims were militants, but local sources say civilians are among the dead. Scores of local villagers fled after they were caught between the militants and government forces.
The airstrikes come after the Pakistani Taliban claimed responsibility for a blast that killed 26 soldiers two days ago.
Meanwhile in Baluchistan, officials say the death toll from Tuesday's bus bombing has risen to at least 28, and the minority Hazara community is refusing to bury the victims until those responsible for the attack are arrested. The outlawed Sunni militant group Laskar-i-Jhangvi has claimed responsibility.
Authorities say the bus full of Shi'ite Muslim pilgrims was returning from a trip to Iran when the blast erupted about 60 kilometers west of Quetta. Police say many of the victims were women and children. Witnesses say the bus was packed, with more than 50 people on board. Several security personnel escorting the bus were also reported killed.
Baluchistan is a restive region that is home to Islamist militants and an insurgency demanding greater autonomy.