捜 - search, look for, locate

search (esp. in criminal investigations); investigation; inquiry; enquiry

search (esp. for someone or something missing); manhunt

(police) investigator

special investigation

controlled delivery; arm's-length surveillance

house search (e.g. by the police)

searching far and wide

scientific crime detection; forensic investigation

special investigation headquarter

initial investigation (by police)

chief investigator; head of the investigation; lead investigator

criminal investigation