One police officer and two election commission employees were killed when a roadside bomb struck their vehicle in northern Afghanistan, dpa cited police as saying. "The incident took place in Khanabad district as they were transferring ballot boxes from the district to Kunduz city," said Sayed Sarwar Hussaini, the police spokesman for Kunduz province. "All the ballot boxes were full of votes but destroyed in the incident," said Mir Hamza Ahmadzai, head of the provincial election commission office.