R Kelly is facing further investigation over child sex abuse allegations by police in Chicago.
An earlier investigation, which originated from a video tape which allegedly shows the singer having sex with a 14-year-old girl, resulted in 21 charges against Kelly.
A police spokesman said new videotapes were now being studied to ascertain if any of the people involved were underage.
The singer has denied any criminal activity and pleaded not guilty at a hearing in June. His spokesperson has dismissed the new tapes as propaganda to prejudice the forthcoming trial.
