TOPEKA, Kan. (AP) — Illegal sex is a problem in Kansas prisons, but it’s not as widespread as inmates and staff suggest, the state’s top prisons official said Monday.Corrections Secretary Roger Werholtz responded to an investigation by the Topeka Capital-Journal, which reviewed hundreds of documents on the Topeka Correctional Facility and interviewed inmates and prison employees. The investigation concluded as many as a third of the prison’s 250 staff members have been involved in an illegal black market.