A car and a mini-school bus collided, causing the car to roll over and sent two people to hospital.
The accident occurred shortly before 9 a.m. on Wednesday when the vehicles got into an accident on the Common Street hill near Bellevue Road.
The driver of the car had to be extricated by Watertown firefighters, and was taken to hospital with minor injuries.
The school bus had one student aboard, a 17-year-old who was not from Watertown. The student also went to hospital for treatment of minor injuries.
Common Street was closed for about half an hour from Orchard Street to Belmont Street.