The Fifth Estate has learned from sources that Toronto police have identified the killer of nine-year-old Christine Jessop, who was abducted from her Greater Toronto Area home before being raped and killed in 1984.

Sources say the killer is dead and died by suicide.

Police are set to provide an update at 2:45 p.m. ET. 

Watch that announcement live in this story.

Interim Toronto police Chief James Ramer and Staff Supt. Peter Code are set to speak at the news conference.

Jessop's body was found in a wooded area of Sunderland, Ont., about 56 kilometres from her rural Queensville, Ont., home on Dec. 31, 1984. She had been missing since Oct. 3 when she was last seen getting off a school bus.

Investigators say Jessop was stabbed to death.

Guy Paul Morin, the family's neighbour, was wrongfully convicted of the girl's killing before being cleared due to advancements in DNA technology. Ontario's attorney general published a detailed report on the failings of Morin's conviction.

Toronto police have been investigating the case ever since.