Ten passengers were killed and another 21 wounded Saturday when a van and a bus collided on a highway in Sri Lanka's former war zone of Jaffna, police said. All those killed in the head-on collision along the A-9 highway were passengers travelling in the smaller vehicle, police said adding that three of the wounded were in critical condition. The crash involved a van heading to Jaffna town and a bigger bus travelling in the opposite direction, police said, adding that an investigation was underway.