CHICHAWATNI - At least four members of a same family were killed in a collision between a car and tractor-trolley here on Monday. According to police sources, the accident took place on Burewala Road near Chichawatni when four members of a family were travelling in a car. Suddenly the car collided with a speeding tractor-trolley coming from the opposite direction, killing all the family members on the spot. The dead bodies of the deceased including a woman and a child were shifted to hospital for post-mortem.