WICHITA, Kan. (AP) — Public defenders are seeking to block a television crew from filming a prison documentary at the Sedgwick County jail.

The MSNBC = show “Lockup” has been filming there since Sept. 8 for a show profiling life in prison.

The Wichita Eagle reports  that the objections come from the Sedgwick County Public Defender’s Office, the Sedgwick County Conflicts Office and the Death Penalty Defense Unit. Their motion filed Thursday seeks a court order that prohibiting the TV crew from entering the facility to interview and record inmates.

Defense attorneys fear defendants could incriminate themselves.

44 Blue Productions referred comment Friday to its public relations firm, which did not immediately return a message.

Sheriff Jeff Easter says everyone who appears on the show must sign a waiver agreeing to be filmed.