fact-finding investigation; inquiry into the truth
Formal term for an investigation aimed at uncovering the facts or truth of a matter, often used in legal, journalistic, or official contexts.
A fact-finding investigation into the accident has begun.
The committee released the results of its fact-finding inquiry.
調査 is a general term for investigation or survey, while 真相調査 specifically focuses on uncovering the truth or facts behind an incident.
事実確認 means 'fact-checking' or 'verification of facts', often used in journalism or everyday contexts, whereas 真相調査 implies a more formal, in-depth investigation.
Compound of 真相 (しんそう, 'truth; real facts') and 調査 (ちょうさ, 'investigation; inquiry').