証しょう拠こを掴つかむ

expression, godan verb (-mu)

obtain evidence; get proof

Used when someone secures concrete evidence, often after effort or investigation. The verb 掴む implies grasping or seizing something tangible.

• 警けい察さつはついに犯はん行こうの証しょう拠こを掴つかんだ。

  The police finally obtained evidence of the crime.

• 内ない部ぶ告こく発はつ者しゃが不ふ正せいの証しょう拠こを掴つかんだ。

  The whistleblower got hold of evidence of the wrongdoing.