Human remains have been located in Lake Ontario, east of Napanee, connected to a cold case from 1983.
L&A OPP and the Underwater Search and Recovery Unit, recovered a vehicle from the lake near Amherstview, in January.
They spotted another vehicle during their search, one that contained human remains.
They belonged to a David Hannah, a Millhaven Penitentiary prison guard, from Amherstview, who was murdered.
The 36-year-old went missing in 1983.
In 2011, the province offered a $50,000 reward for information leading to the arrest of those responsible.
Quinte News was told by the OPP that the cause of death is not known at this time and no other details are known at this time.
OPP Divers, assisted by OPP Urban Search and Rescue, OPP Marine Units, H.R. Doornekamp Construction and Dundee Marine, were able to recover the remains and the vehicle in early May.
