R. Kelly has been charged with 11 new counts of Sex Assault and sex abuse-related charges, the Chicago Tribune reports.

Tribune reporter Megan Crepeau said these Class X sex assault charges are most serious class of felony in Illinois, short of murder.

Earlier this year, Kelly, 52, pleaded not guilty to 10 counts of aggravated sexual abuse pertaining to four women, including three who were minors at the time the abuse allegedly occurred. The abuse in question is alleged to have occurred over roughly a decade, starting in the late 1990s.

R. Kelly is due in court on June 6.

This is a developing story. Check back for updates.