A roadside bomb, that exploded near a vehicle of security forces, killed at least four officers on the spot and injured several others in Pakistan's restive North Waziristan, Pakistani security agencies said on Thursday.
In another incident, two school children lost their lives after a mortar fired by insurgents landed near a road in the Tirah valley of Khyber Pakhtunkhwa (KP) province.
The Tehreek-e-Taliban Pakistan (TTP) has been targeting Pakistani security forces and law enforcement agencies in the region though no group has claimed responsibility for the attacks, so far.
The TTP, it is believed, got a new lease of life after the return of the Taliban regime in neighbouring Afghanistan. The group's top commanders have been released from Afghanistan jails, allowing it to reorganise and regroup along the bordering areas with Pakistan while carrying out attacks on the Pakistani security agencies.