noun, noun which may take the genitive case particle 'no'
examiner; investigator; inquisitor; agent
Refers to an official person who investigates, examines, or inspects, often in a governmental or formal context.
調査官が事故の原因を調べている。
The investigator is looking into the cause of the accident.
彼は国税庁の調査官だ。
He is an examiner for the National Tax Agency.