裏うら付づけ捜そう査さ

noun

corroborative investigation; search for supporting evidence

Used in legal, police, or journalistic contexts for an investigation aimed at finding evidence that backs up a claim or suspicion.

• 警けい察さつは容よう疑ぎ者しゃの供きょう述じゅつを確かく認にんするため、裏うら付づけ捜そう査さを進すすめている。

  The police are conducting a corroborative investigation to verify the suspect's statement.