Русско-англо-русский юридический словарь

A judge will now question him in a closed court hearing before deciding whether to remand him in custody or release him on bail. (Metro)

He then asked that his application asking for that secrecy should itself be heard in a closed court session, right there and then. (Bristol Live)

If a trial is in chambers, it happens in a court room without the public, newspaper reporters, etc. being there. (Cambridge Advanced Learner's Dictionary & Thesaurus)