WICHITA, Kan. (AP) — A federal judge is considering whether to appoint an independent third party to look into prison recordings of confidential conversations between inmates and their attorneys at the Leavenworth Detention Center.

U.S. District Judge Julie Robinson has scheduled a hearing Tuesday to determine the appointment and scope of a special master in the case. The practice surfaced in a case over distribution of contraband at the prison in which video recordings were subpoenaed by a grand jury. But the defense outcry is now rippling across cases.

The federal public defender’s office filed a motion Monday seeking a special master’s inquiry.

Robinson last week ordered all jails housing federal detainees in Kansas and Missouri to stop any recordings.

The U.S. Attorney’s office says it would not knowingly seek privileged attorney-client communications.