Two people remain in hospital after being pulled from Lake Huron in Point Edward Saturday.
Police received a report of a possible drowning at a beach near Fort Street just before noon.
The Sarnia and Point Edward Fire Departments, along with the United States Coast Guard, and a member of the public, assisted Lambton OPP in rescuing two people who were in distress in the water.
Both were taken to Bluewater Health for treatment.
Lambton OPP previously reported a 37-year-old woman from Ottawa had died. It has since been determined the woman is still in hospital in critical condition.
Police also said a male individual, who family say was attempting to rescue the woman, has been transferred to London hospital, and was not treated and released as previously stated.
With files from Stephanie Chaves