Kolkata: A couple died in a road accident while their 4-year-old son sustained serious injuries in the same. Four others have also been injured in two separate accidents in the city.The first accident took place in Nadia’s Ranaghat where the bike, which the victims were riding, was hit by a truck on Sunday morning. Police said one Rajesh Mondal, a resident of Begopara area of Nadia was going with his wife and his 4-year-old son to Ranaghat along the National Highway 34. When they were passing Doyabari area, a speeding truck coming from the opposite direction hit them. Also Read – Heavy rain hits traffic, flightsThe truck driver and the helper fled the spot immediately after the accident leaving the vehicle at the spot. According to the locals, the truck was running at a high speed as a result of which the driver failed to control the vehicle. The locals rushed the injured victims to a nearby hospital where the couple declared brought dead while the boy has been fighting for his life in the hospital.Police have seized the vehicle and are conducting raids to nab the truck driver who has been absconding since the incident took place. The accident caused traffic congestion on the National Highway 34 after the accident. Normalcy was restored after an hour following the intervention of the district police officers. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedIn another incident, a speeding car lost control and overturned on Mahim Haldar Street in Kalighat injuring the driver. The locals rescued the driver and sent him to MR Bangur Hospital at around 12.30 am on Saturday midnight. According to the hospital sources, the victim’s condition is serious. Police later reached the spot and seized the vehicle. Police suspect that the victim might have been driving the vehicle in a drunken state. CCTV footages are being looked into. They have started a probe in this regard.The third accident took place in Bidhannagar where two persons travelling in a car received injuries after the vehicle dashed against the road divider. The accident took place near Baguiati in the wee hours of Sunday. The victims have been identified as Md Tarif (27) , Kaushar Ali (24) and Md Samsul (26). They were taken to RG Kar Medical College and Hospital.