One person was sent to hospital early Thursday morning following a collision between a truck and a snowplow on Stoney Trail.
It happened around 12:30 a.m. near 52 Street Southeast.
The Calgary Police Service (CPS) said it appeared the truck collided with the back of the snowplow.
Police said the driver of the truck was taken to hospital with “serious to life-altering injuries.”
The driver of the snowplow was also taken to hospital as a precaution.
Traffic along Stoney Trail was diverted for several hours.
Police continue to investigate the cause of the crash but believe alcohol may have been a factor.