Warnock flatly denied the allegation that he harmed his estranged wife, and he told The Atlanta Journal-Constitution in a March 7 interview that "it didn't happen."
His wife has referred questions to her lawyer, divorce attorney Randy Kessler, who said Friday that the divorce proceedings were recently concluded. He declined to comment further, and court records indicate the case has been sealed.
The report about the incident came as Warnock prepared to qualify to run against Republican U.S. Sen. Kelly Loeffler in one of the nation's most-watched political contests.
One of three prominent Democrats in the contest, his campaign is backed by key state and national officials, including Stacey Abrams and the Democratic Senatorial Campaign Committee.