Calgary, AB,

Additional arrest made in relation to the homicide of Shawn McCormack

Investigators from the Homicide Unit have taken a second suspect into custody in relation to the July 2022 homicide of Shawn Garry McCormack.

On Sunday, July 3, 2022, at approximately 9:30 a.m., police were called for reports that a body was located in an alley behind the 1100 block of Frontenac Avenue S.W. Upon arrival, officers located a deceased man, later identified as Shawn Garry McCORMACK, 34, of Calgary. It was later determined that the homicide took place at a residence in Forest Lawn.

On Wednesday, Sept. 28, 2022, Devon William SHEDRICK, 29, of Calgary was charged with one count of first-degree murder in relation to the homicide. Investigators believe that additional people aided SHEDRICK during the incident and have been searching for further suspects.

Today, Thursday, Nov. 10, 2022, one woman was taken into custody from the Forest Lawn area. Detectives are in the process of interviewing this suspect, and when charges are formally laid, her identity will be released.

“Our investigators have worked tirelessly to examine, and re-examine, every piece of evidence in this case,” says Staff Sergeant Martin Schiavetta of the Calgary Police Service Homicide Unit. “We’ve also received a great deal of assistance from the public which has been crucial to our investigation.”

The investigation will remain ongoing until everyone who was involved in this incident is held accountable.

Investigators are also still looking for the public’s help to locate Justin Aaron CORNELL, 30, of Calgary who is believed to have information about the homicide.

Need to Locate CORNELL (1)

Anyone with information about this homicide are 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


APP: P3 Tips

Case # CA22267124/3508