R&B singer, R. Kelly, who is serving a 30-year sentence for sex offenses, was found guilty of child pornography charges on Wednesday after a month-long trial in his hometown of Chicago.

Kelly, whose full name is Robert Sylvester Kelly, was convicted of three counts of producing child pornography and three counts of enticement of a minor, the Chicago Tribune reported.

The newspaper noted that Kelly, a three-time Grammy Award-winner, was acquitted by a federal jury of seven other counts including charges that he obstructed justice in a previous trial.

Kelly and two ex-associates had been accused of rigging the singer’s 2008 child pornography trial in which a jury delivered a verdict of not guilty.

Kelly’s former manager, Derrel McDavid, and an ex-employee, Milton “June” Brown, were also acquitted on Wednesday of the obstruction charges.

Kelly was convicted in New York in September of recruiting teenagers and women for sex.

The “I Believe I Can Fly” artist was found guilty of eight charges of sex trafficking and one count of racketeering in the New York case.