Calgary, AB,

Man sought in relation to July 2022 homicide

We continue to investigate the homicide of Shawn McCORMACK and are looking for the public’s help to locate a man who is believed to have information about the incident.

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.

We are now looking to speak with Justin Aaron CORNELL, 30, of Calgary who is believed to have information about the homicide. Investigators have made multiple attempts to locate him, which have been unsuccessful.

CORNELL is described as 5’5” tall, 200 pounds, with black hair and hazel eyes. A photo of CORNELL is available on The City of Calgary Newsroom.

“Information from witnesses has been vital in progressing our investigation and we are thankful to those who have already come forward and shared details,” says Staff Sergeant Martin Schiavetta of the CPS Homicide Unit. “Anyone who has information about the incident, witnessed something suspicious or who may have heard about the incident after the fact is asked to contact us. Even something that may initially seem insignificant can be instrumental in solving the case.”

Individuals 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