party to the case; parties concerned
Legal term referring to a person directly involved in a case or incident, such as a plaintiff, defendant, or subject of investigation.
Information cannot be disclosed without the consent of the party to the case.
The police are questioning the person concerned in the case.
Compound of 事件 (case, incident) and 本人 (the person himself/herself). The exact historical derivation is uncertain, but the term is used in modern legal and formal contexts.