所しょ属ぞく不ふ明めい

noun which may take the genitive case particle 'no'

of unknown affiliation; unidentified affiliation

Used to describe a person, group, or object whose organizational or group membership is not known. Often appears in news reports or formal contexts.

• 所しょ属ぞく不ふ明めいの団だん体たいから寄き付ふがあった。

  There was a donation from an organization of unknown affiliation.

• 警けい察さつは所しょ属ぞく不ふ明めい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 body of unknown affiliation.