At least five people were injured in a collision between a two wheeler and an auto rickshaw at Thempamuttam, near Balaramapuram, on Sunday night. A woman passenger in the autorickshaw sustained serious injuries and has been admitted to a private hospital in Thiruvananthapuram city, the Balaramapuram police said. There were five passengers in the auto, including three children. Their injuries are not serious, the police said.