Police investigate fatal collision on Stoney Trail S.W.

Our Traffic Unit continues to investigate a fatal collision involving three vehicles that occurred last night.

At approximately 11 p.m., yesterday, Sunday, Aug. 2, 2026, we responded to reports of a collision on the northbound lanes of Stoney Trail S.W. near the exit to Tsuut’ina Parkway.

At that time, it is believed a 2011 Mercedes Benz C350 being operated by a 30-year-old man was travelling southbound in the northbound lanes of Stoney Trail. The Mercedes Benz struck an oncoming 2016 Subaru Impreza being operated by a 43-year-old man. Following the impact, both vehicles caught fire. A Chevrolet Equinox operated by a 52-year-old woman then struck the Mercedes Benz. As a result of the collision, the occupants of the Mercedes, the driver and passengers, a woman and a child, were pronounced deceased at the scene. The driver of the Subaru, the sole occupant, was also pronounced deceased at the scene. The driver and three youth passengers of the Chevrolet were transported to hospital, one suffering from life-altering, non-life-threatening injuries.

Our Traffic Unit continues to investigate the circumstances surrounding the collision. Impairment and excessive speed on behalf of the driver of the Mercedes Benz are being investigated as factors in the collision.

Anyone who was affected by witnessing this incident is encouraged to connect with our Victim Assistance Support Team (VAST) by calling 403-428-8398 or toll-free at 1-888-327-7828.

VAST is a free service provided to victims of crime and tragedy. More information is available at: https://www.calgary.ca/cps/community-programs-and-resources/victims-of-crime/victim-assistance-support-team.html

Anyone with information about this incident is asked to contact police by calling 403-266-1234. Tips can also be submitted anonymously to Crime Stoppers through any of the following methods:

TALK: 1-800-222-8477
TYPE: www.calgarycrimestoppers.org
APP: P3 Tips

Case #: CA26348368