"It’s over," an anonymous official with knowledge of the decision said, according to the Boston Globe. "The discussions are about how to sunset it."
Details have not been given as to the rationale behind the decision, but earlier on Monday, Mayor Walsh had expressed his disapproval of the bid.
"I refuse to mortgage the future of the city away," Mayor Walsh said on Monday. "I refuse to put Boston on the hook for overruns."
The US Olympic Committee chose Boston in January, beating out Washington DC, San Francisco, and Los Angeles.