姓せい名めい不ふ詳しょう

noun, noun which may take the genitive case particle 'no'

unidentified; name unknown

Used in formal or official contexts to indicate that a person's name cannot be determined. Often appears in police reports, news articles, or administrative documents.

• 事じ故この被ひ害がい者しゃは姓せい名めい不ふ詳しょうのまま病びょう院いんに運はこばれた。

  The accident victim was taken to the hospital with his name unknown.

• 警けい察さつは姓せい名めい不ふ詳しょうの遺い体たいの身み元もとを調しらべている。

  The police are investigating the identity of the unidentified body.