A suicide bomber killed 13 people and wounded at least 20 in an attack on a minibus carrying police cadets in the main city in Afghanistan's east Wednesday, a government spokesman said. Ahmadzia Abdulzai, a spokesman for the governor of Nangarhar province in Afghanistan's turbulent east, said the bomber had rammed an explosives-packed car into the bus carrying cadets in Jalalabad city. He said the dead and wounded included police and civilians.