A suicide bomber pretending to need help with his car killed 26 people in northwest Pakistan on Sunday, AP quoted officials as saying. The explosion at a polling station also wounded 15 people in Buner, a district bordering Swat, police official Beharmand Khan said. The building targeted was a school, where voters were casting ballots in a by-election for a National Assembly seat. «The suicide attacker pulled his car outside the polling station, and asked people to push the vehicle, saying that it had broken down. His purpose was to gather the maximum people around the car. The moment people started pushing the car, he blew it up,» said Mian Iftikhar Hussain, the information minister of the North West Frontier Province.