The OPP say they have a suspect in connection to a pair of double homicides in Kirkland Lake.
Back in July of last year, two people were sent to hospital, but were pronounced dead.
In a second incident last August, the OPP located two other deceased people.
Police have linked all four homicides to one person.
But 38-year-old Martyn Rosko of Kirkland Lake has since died and cannot be charged criminally.