警察とは別に、新聞社も独自に調査を進めた。
Separately from the police, the newspaper also pursued its own investigation.
県は国の方針を待たず、独自の判断で休校を決めた。
The prefecture decided on its own judgment to close schools without waiting for national policy.
彼は誰にも頼らず独自に研究を続けてきた。
He has continued his research independently, relying on no one.