No other details have been released.
RELATED | R Kelly case: Defense team's motion for acquittal denied in Chicago child pornography trial
According to the district court's website, the courthouse will be closed Tuesday, and all jury trials will be suspended for one day.
Kelly's trial on child pornography charges was supposed to enter its fourth week on Tuesday.
SEE ALSO | R. Kelly trial update: Prosecutors expect wrap up case, 4th alleged victim testifies