Patiala, December 13 - One person was killed when six vehicles collided one after the other on the Rajpura-Ambala road today due to fog and smoke from a fire in the dumping ground. The deceased is said to be from Kathua whose body has been kept in the Civil Hospital of Rajpura. The person died due to being hit by vehicles during the accident. During the accident, the Uttarakhand bus was also damaged and some of its passengers were injured. It is reported that visibility was reduced to zero due to fog and smoke from the fire in the dumping ground.