OPP say one person was killed and four others were injured in a single-vehicle rollover in Norwich Township on Tuesday morning.
Police say emergency services were called to the scene at around 7 a.m. for a report of a collision.
According to police, an SUV was headed eastbound on Potters Road when it reportedly left the road and rolled over before coming to rest in a field.
The man who was driving the vehicle suffered life-threatening injuries and was pronounced dead at the scene, police say.
The four other men who were in the vehicle were transported to hospital.
Later in the day, OPP announced that two of the four men had suffered life-altering injuries.
Potters Road was closed between Middle Townline Road and Summerville Line until shortly before 2 p.m. as emergency crews dealt with the incident.
Police are asking anyone who may have witnessed the incident to call 1-888-310-1122.