City police investigate R&B singer R. Kelly in sex tape News Autos Commentary Health Lottery Numbers Obituaries World News Wire Autos Commentary Health Lottery Numbers Obituaries Politics & Government Kupcinet Mitchell Neal Novak Quick Takes Roeper Sneed Steinberg E-mail the News Staff City police investigate R&B singer R. Kelly in sex tape February 8, 2002BY JIM DEROGATIS AND ABDON M. PALLASCH STAFF REPORTERS Chicago police are investigating whether R&B superstar R. Kelly--part of today's opening act at the Winter Olympics in Salt Lake City--had sex with an underage girl and videotaped the illegal act. A 26-minute, 39-second videotape, ...