Investigation ɪnˌvestɪˈɡeɪʃn Authorities Police Noun Criminal/Murder/Police Accident Team

• a criminal/murder/police investigation
• an accident investigation team
• the president has promised a full investigation.
• the authorities have launched an investigation to determine why the ferry sank.

investigation

1. an official examination of the facts about a situation, crime, etc.
• a criminal/murder/police investigation
• an accident investigation team
• The president has promised a full investigation.
• The authorities have launched an investigation to determine why the ferry sank.
• She remains under investigation for fraud.
• He is under investigation for assaulting a teenager.
• The police are conducting ongoing investigations into the man's death.
• Officials are calling for an investigation into the incident.
• On investigation, the noise turned out to be only a door banging.
• He is suspended pending a thorough investigation (= until an investigation has happened) of the allegations.

Extra Examples

• The police have completed their investigations into the accident.
• Chief Supt Brian Allwood has been leading the investigation.
• She headed the investigations into the bribery allegations.
• An official investigation concluded that 9 000 people were killed or went missing during that period.
• The company confirmed that an internal investigation was under way.
• He was on trial for allegedly obstructing an investigation into the bank's dealings.
• Police are still pursuing their investigations.
• The authorities conducted an extensive investigation into his tax affairs.
• The board of directors commissioned its own internal investigation.
• The ongoing investigation has led to numerous intelligence leads.
• These claims certainly warrant further investigation.
• He called for investigation into the hospital's management.
2. a scientific or academic examination of the facts of a subject or problem
• SYNONYM enquiry
  https://www.oxfordlearnersdictionaries.com/definition/english/enquiry
• Further investigation revealed a flaw in this theory.
• Refer patients with these symptoms for further investigation.
• the results of a preliminary investigation into stress at work

Word Origin

• late Middle English: from Latin investigatio(n-), from the verb investigare, from in- ‘into’ + vestigare ‘track, trace out’.