TORONTO -- Three men were found deceased inside a condominium building in Mississauga, Ont. on Wednesday afternoon, Peel Regional Police say.

Emergency crews were called the building, located near Burnhamthorpe Road and Confederation Parkway, around 1:30 p.m.

All three bodies were found inside a single unit of the condominium, police said.

Police said they are currently investigating the deaths as suspicious and are awaiting the coroner to determine the cause of death.

“The coroner attended, and they deemed it to be suspicious and actually had our Homicide and Missing Persons Bureau attend,” she said. “At this particular point, they have been in their early stages of that particular investigation," Peel Regional Police Const. Heather Cannon told reporters Wednesday night.

She said a fourth male victim was located inside the unit and was transported to a local hospital as a precautionary measure. However, his condition has worsened and is now listed as serious.

All four victims are known to each other, Cannon said. However, it is unclear if they reside in the unit.

Cannon noted that police also found illicit substances laced with another substance at the scene.

“We believe that they make up part of what has occurred today and it’s quite tragic,” she said.

Cannon said investigators believe there may have been a get together at the residence Tuesday night and several people may have ingested those substances.

“If those people are not feeling well, we do ask that they are attending a medical facility,” she said.

There is no suspect information at this time.

Anyone with information is being asked to contact police or Crime Stoppers anonynously.