RATNANAGAR: A man died and four others were injured in a bus-ambulance collision at Khairahani of Chitwan district on Saturday. According to the District Police Office, Chitwan, the deceased has been identified as ambulance driver Tanka Bahadur Karki of Khairahani Municipality-2. The injured have been identified as Kul Bahadur Ghale, Pradip Ghale and Sandeep Ghale of Khairahani-4 and Uma Ghale. Police informed that Kul Bahadur, Pradip and Sandeep are in critical condition. The condition of Uma is normal. The accident occurred when Pradip was being taken to a hospital for treatment. Police confirmed that the accident took place when the ambulance (Na 2 Ba 6454) heading towards Bharatpur from Chitwan collided head-on with the bus (Na 5 Kha 4163) yesterday night.