Toronto police are slated to release more details on the mystery man in a photograph found on alleged serial killer Bruce McArthur's computer during their investigation Monday morning.
While he said police intend to comb at least 70 properties linked to McArthur in the coming months, Idsinga declined to say if investigators expect to unearth further alleged victims.
Kanagaratnam reportedly moved to Canada in 2010, he was originally from Sri Lanka.
Toronto police believe that Kanagaratnam was killed sometime between Sept 3 and Dec 14 2015.
Police said it was rare for them to release a photo of a potential victim, but they said "good feedback" from the public - including more than 500 tips - helped them identify the man.
"I think we've all seen in the media so-called experts who tell us that serial killers don't start in their late fifties", Idsinga says.
Police allege Kanagaratnam, 37, was killed sometime between September 3 and December 14, 2015, but Idsinga would not elaborate on what brought them to that conclusion.
McArthur was previously charged in the murders of Selim Esen, Andrew Kinsman, Majeed Kayhan, Dean Lisowick, Soroush Mahmudi, Skandaraj Navaratnam and Abdulbasir Faizi.
Toronto police detective Hank Idsinga said on Monday that Kanagaratnam's direct family, who live in Sri Lanka, were informed over the weekend of his death. "The identification was confirmed with the assistance from an global government agency", he said but would not offer further details. Police say he buried his victims' body parts in potted plants on properties where he worked as a self-employed landscaper.
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There is now no evidence to connect the cases to McArthur, but Idsinga has said he "wouldn't be surprised" if he is linked to more killings.
"We have lots of searches left to do as the weather gets warmer", Idsinga said.
Kayhan's remains have not yet been found.
"He doesn't quite fit the profile that we've seen before", said Idsinga.
The sprawling investigation into McArthur is probing cold cases that go as far back as 1975.
He emphasized, however, that police have not uncovered any evidence to suggest that McArthur's alleged killing spree began before 2010 when Navaratnam is believed to have died.
Kanagaratnam's remains were found buried in planters that McArthur, a landscaper, kept stored at the home of one of his clients. Many of them were known to frequent Toronto's Gay Village area.
Police arrested Mr McArthur on 18 January.