Five police officers were killed when their vehicle was blown up by a remote-controlled roadside bomb in south-eastern Afghanistan on Tuesday morning, dpa quoted police sources as saying. The police personnel, who were on their way from Sabari district of Khost province towards the provincial capital, were struck by a remote-controlled roadside bomb blast, provincial police chief Mohammad Ayoub Khan said. Khan could not immediately confirm the police death toll. However, another police official who would talk only on condition of anonymity, said that five police officers were killed in the explosion. Khan said the police personnel "were using a civilian car just to avoid any attack on themselves, but I don't know why they were still targeted."