life-threatening injuries from the explosion. Meanwhile, a roadside bomb killed three Afghan police and injured three others in the south-eastern province of Khost. According to local police, suspected Taliban insurgents had detonated a remote-controlled bomb against the police. US military began an air strike Friday on the insurgents in the southern province of Kandahar, local police said. Information on casualties was not yet available, police said. ---SP 21 25 Local Time 18 25 GMT