Synonyms for Police investigation:

• n.

  •act (noun)
  • police work,
  • police investigation.
  •detecting (noun)
  • detecting.
  •detection (noun)
  • detection.
  •detective work (noun)
  • detective work.
  •Other relevant words: (noun)
  • investigation,
  • investigating.
  •police investigation (noun)
  • sleuthing.

Hypernym for Police investigation:

• n.

  • act
    detective work, detection, surveillance, forensics, sleuthing, detecting, roundup.

Hyponym for Police investigation:

• n.

  • act
    investigation, investigating.