Lambton OPP say they're investigating a death at a residence on Egremont Rd. in Warwick Township but are releasing few details at this time.
Police responded to the scene at around 2:30pm on Sunday after a 29-year-old man died of unspecified injuries.
Members of the OPP's Crime Unit and Forensic Identification Services are probing the circumstances surrounding the death.
Police haven't said whether it's being investigated as a murder, or if anyone is in custody.
An autopsy was expected to take place Monday in London.
Anyone with further information is asked to call the OPP or Sarnia-Lambton Crime Stoppers.