Correctional Services Canada says it's investigating the death in prison of a Strathroy man who was serving time for a string of robberies.

Jeffrey Raymond Ysebert was found in need of medical attention in his cell at the Warkworth Institution in Campbellford on January 6th.

Acting deputy warden Rob Campney says the 34-year-old was taken to a Peterborough hospital where he was pronounced dead on Sunday.

Campney says while foul play isn't suspected, police and the coroner have been notified of the death.