Boaters located a suitcase floating on Lake Ontario on Wednesday off Bluffer's Park in east-end Toronto.
Police say an autopsy conducted on Thursday on the badly decomposed torso positively identified the remains as those of Guang Hua Liu.
Some of the 41-year-old woman's body parts _ but not her torso _ were found last month in a ravine in east Toronto and a park in Mississauga, Ont.
Liu's estranged boyfriend, Chun Qi Jiang, 40, was arrested Aug. 26 and charged with second-degree murder in what police say was a domestic-related homicide.
Liu was reported missing on Aug. 11, one day after her friends dropped her off in front of a now-defunct spa she owned in east Toronto.
On Aug. 15, her right foot was found in the Credit River in Mississauga, about 45 kilometres west of her home.
Liu's head and hands were later discovered in the same river in the Hewick Meadows Park area.
Days later, two calves, a thigh and an arm were found in West Highland Creek, just blocks from where she lived.
Forensic tests determined all the remains belonged to Liu, but police still do not know how she died.
Toronto police say the investigation has been turned over to the Peel Regional Police Service homicide squad.
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