noun
fact-finding committee
A formal committee established to investigate and uncover the truth behind an incident or issue.
政府は事故の原因を調べるため、真相究明委員会を設置した。
The government set up a fact-finding committee to investigate the cause of the accident.
Compound of 真相 (truth, real facts), 究明 (investigation, thorough inquiry), and 委員会 (committee).