investigation

US /ɪnˌves.təˈɡeɪ.ʃən/
UK /ɪnˌves.təˈɡeɪ.ʃən/
"investigation" picture
1.

enquête, investigation, recherche

the action of investigating something or someone; formal or systematic examination or research.

:
The police launched an investigation into the robbery.
La police a ouvert une enquête sur le vol.
A thorough investigation revealed the cause of the problem.
Une enquête approfondie a révélé la cause du problème.