Ontario's Special Investigations Unit has been called in to investigate after a 49-year-old man died Saturday in Guelph during a police call.
The SIU says, they were called to an apartment building in the area of Waterloo and Beechwood Avenues around 3:00 a.m. Saturday.
When they arrived, an officer found the man unresponsive and provided medical assistance.
Paramedics arrived shortly after and took over, but the man was pronounced dead shortly before 4:00 a.m. Saturday.
A post-mortem took place Saturday in Hamilton, and three investigators have been assigned to the case.
Anyone with information on the incident is urged to contact the SIU.