One person is confirmed dead following a head-on collision on Saturday night.
The Ottawa Police Service has closed Montreal Road in both directions between Highway 174 and Bearbrook Road as the result of the fatal motor vehicle collision.
Ottawa Fire says they got the call around 11:20 p.m., and crews had to extricate one person from one vehicle and two people from another. They suffered serious injuries.
Firefighters had to remove the doors on both vehicles in order to gain access to the patients.
Authorities say a total of eight people were in the vehicles involved, and four were taken to hospital.
Montreal Road was closed for more than eight hours while police investigated, but has since been reopened.