Toronto police say a woman has now died after being pulled from Lake Ontario at Cherry Beach on Friday morning.
Paramedics said they initially transported a woman with life-threatening injuries to a local hospital at around 9 a.m.
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Police said a body was seen in the water and that lifeguards went in to pull the woman out.
Investigators said the lifeguards performed CPR on the woman and were able to revive her.
There is no word on how long she had been in the water for.
Her identity or age has not yet been released.