Islamabad , Pakistan ( CNN ) -- A suicide bomber killed 26 people and injured 63 others during a funeral procession in northwestern Pakistan Thursday , a senior police official told CNN . Saleem Murrawat , the police chief of the Lower Dir district of Khyber Pakhtunkhwa province , said the ceremony was for a member of a pro-government anti-Taliban militia in the area of Jandol . The chief said a suicide bomber blew himself up when he was standing with people at the procession . There are usually no security checks in such ceremonies . The chief said the bomber was around age 18 . Khyber Pakhtunkhwa and the neighboring tribal region have been havens for militants and there have been many insurgent attacks in the area -- close to war-torn Afghanistan . On Tuesday , a school bus loaded with children came under rocket and small arms fire near Peshawar . The driver and three children were killed and 16 others wounded , police said . The Tehreek-i-Taliban Pakistan group claimed responsibility for the attack , according to the group 's regional spokesman , Mohammad Talha , who said it was in response to growing support for local resistance groups against the Taliban in the region . CNN 's Nasir Habib contributed to this report .
The suicide bomber was standing among people at a funeral . The funeral was for a member of an anti - Taliban militia . On Saturday , a school bus was attacked .