Guelph police are investigating after what was initially described as a 'sudden death' ended in a woman being rushed to hospital, very much alive.

The woman was found in a room at the Days Inn on Gordon Street in the city's south end on Tuesday, police say.

Police reportedly received a call from a staff member shortly after 12:00 p.m. who believed a deceased person had been found in one of the rooms.

Nine police cruisers were at the scene along with a fire truck by early Tuesday afternoon.

Officials initially confirmed that a body was found, and that a crime scene had been secured for further investigation.

But shortly afterward, forensic officers arrived on scene and found the female was alive, with very faint vital signs.

The 50-year-old woman was then transported to hospital where she was treated for non life-threatening injuries.

No information has been released on the identity of the victim or the nature of the injuries.

The Guelph Police Service now says no criminal offence is believed to have taken place, and the Chief of Police has ordered an internal investigation to review the incident.