A cold case investigation from 2013 picks up again in Sudbury.

40-year old Sheri-Lynn McEwan was found badly injured after an assault in her Estaire home, she later died of her injuries.

Investigators ruled it a homicide but were never able to find the killer.

That invesigation continues almost four years to the day of the murder.

Constable Andre Taschereau says they hoping for even the smallest piece of evidence.

Anyone with information is asked to contact OPP at 1-888-310-1122 or on their tip line at 1-866-220-2250.

Filed under: Estaire, murder, opp, Sudbury OPP, unsolved