U.S. District Judge Robert Gettleman said Weis must provide the names by next Monday as part of an excessive-force lawsuit filed against the city, the Chicago Sun-Times said Thursday.
Weis has refused to provide the names of thousands of Chicago officers who have been named in five or more complaints since 2000.
Gettleman found Weis in contempt of court Wednesday and issued a warning of potential fines and jail time should the list not be provided next week.
Jennifer Hoyle, a spokeswoman for the city's law department, told the Sun-Times a review of the matter would be conducted to determine how Weis and the city will respond.
"We expected, based on the circumstances, this was a possible outcome," Hoyle said. "We are working with Superintendent Weis and the police department to determine how we will respond."
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