However, "in light of his resignation and based on the wishes of the complainant", that investigation has now ended, the COC said in a statement.
"The independent third party process investigating any other complaints will continue uninterrupted. We hope that anyone who has concerns will contact us," the COC said.
"The events of the past week are deeply concerning to us. They have had a profound impact on our Olympic family. The COC has clear policies that include measures to address harassment of any kind in the workplace.
"Having a workplace environment that is healthy and safe for all of our employees and those attached to the Olympic movement is critical to our organization, and we will examine every possible way to improve those processes."
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Aubut, a lawyer and former co-owner of the National Hockey League's Quebec Nordiques franchise until it relocated in 1995, was a strong advocate for Toronto to bid for the 2024 Summer Olympics. The city ultimately decided against a bid.
Later on Saturday, the COC announced that four-times Olympian Tricia Smith would replace Aubut as interim President.
"I live the values embodied in sport and take very seriously my role in helping spearhead change for the betterment of the Olympic movement in this country," Smith said.
Smith, a lawyer based in Vancouver, captured a silver medal in rowing at the 1984 Los Angeles Los Angeles Olympics.
She is vice president of FISA, the International Rowing Federation, and a board member of the International Court of Arbitration for Sport.
(Reporting by Mark Lamport-Stokes in Los Angeles and Andrew Both in Cary, North Carolina.; Editing by Alan Baldwin/Greg Stutchbury)
