捜そう査さ主しゅ任にんMeaningsNoun1. chief investigator; head of the investigation; lead investigatorKanji used捜search査inspect主(one's) master任obligationComposed of捜そう査さsearch (esp. in criminal investigations); investigation; inquiry; enquiryNoun主しゅ任にんperson in charge; senior staff; manager; chief; headNoun