Sarnia police say the Criminal Investigations Branch is looking into a death in the city's south end.
Police, Sarnia fire and Lambton EMS responded to a report of an unresponsive female at an address in the 200-block of Devine St. just before 8:30pm Thursday.
28-year-old Diana Lynn Gray was pronounced dead at the scene and a post mortem was scheduled to take place in Toronto.
Constable Les Jones says he can't say at this point if the death is considered suspicious.
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Police are not releasing further information at this time and would like to speak to anyone who may be able to assist in the investigation.
Contact Detective Sergeant Dwayne Whelpley at 519-344-8861 (ext 6151) or Sarnia Lambton Crime Stoppers at 1-800-222-8477.