Alcohol has appeared to have been a factor after one person was killed in a head-on crash in East Gwillimbury.
Police got a call just before 6 a.m. Monday about a collision on Highway 48 at Davis Drive just north of Whitchurch-Stouffville.
A vehicle drifted the oncoming lane and collided with another vehicle.
A 28-year-old man from Beeton was pronounced dead at the scene.
A 20-year-old man from Newmarket was arrested for impaired driving and was sent to hospital with serious injuries.