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Calgary Police Reclassify 2023 Forest Lawn Disappearance as Homicide

Calgary Police have reclassified Mainland’s disappearance as a homicide following forensic confirmation of remains, urging anyone with information to call a dedicated hotline.

The Calgary police homicide unit is making a public plea for information on the disappearance and death of Robert Stanley Mainland in January 2023.
The shoulder patch of a Calgary Police Service officer is pictured in Calgary, Friday, July 4, 2025.THE CANADIAN PRESS/Jeff McIntosh

Overview

  • Police confirmed human remains discovered outside Calgary in May 2024 belong to Robert Stanley Mainland after months of forensic analysis.
  • Mainland was last seen in January 2023 near a 7-Eleven on the 5300 block of 17th Avenue S.E. in the Forest Lawn neighbourhood.
  • Investigators now believe foul play led to Mainland’s death and have formally opened a homicide investigation.
  • Staff Sgt. Mark Rahn appealed to the community for any details, emphasizing that even small pieces of information could be vital.
  • Those with information can contact Calgary Police at 403-266-1234 or submit tips anonymously through Crime Stoppers, which may offer a reward.