In a tragic accident, four tourists were killed and five others were severely injured as a tourist vehicle collided with a bridge near the Chingudipur square in Bhadrak on Saturday morning. According to sources, three persons died on the spot while another person was declared dead in the hospital. The five injured persons have been shifted to the SCB Medical College Hospital in Cuttack as their condition deteriorated.The incident took place when the tourists were returning to West Bengal from Puri.