Singer R. Kelly convicted of racketeering and sex trafficking by a federal jury in New York.

R. Kelly, the R&B superstar known for his anthem “I Believe I Can Fly,” was convicted Monday in a sex trafficking trial after decades of avoiding criminal responsibility for numerous allegations of misconduct with young women and children.

A jury of seven Kelly men and five women found Kelly, 54, guilty of all nine counts, including racketeering, on their second day of deliberations. Kelly wore a mask below black-rimmed glasses, remaining motionless with eyes downcast, as the verdict was read in federal court in Brooklyn. Prosecutors alleged that the entourage of managers and aides who helped Kelly meet girls — and keep them obedient and quiet — amounted to a criminal enterprise. Two people have been charged with Kelly in a separate federal case pending in Chicago. He faces the possibility of decades in prison for crimes including violating the Mann Act, an anti-sex trafficking law that prohibits taking anyone across state lines “for any immoral purpose.” Sentencing is scheduled for May 4.

One of Kelly’s lawyers, Deveraux Cannick, said he was disappointed and hoped to appeal.

“I think I’m even more disappointed the government brought the case in the first place, given all the inconsistencies,” Cannick said.

Several accusers testified in lurid detail during the trial, alleging that Kelly subjected them to perverse and sadistic whims when they were underage.

“To the victims in this case, your voices were heard and justice was finally served,” Acting U.S. Attorney Jacquelyn Kasulis said Monday.