He committed a serious crime.

He was put on trial as a war criminal.

The executioner was doing his job ruthlessly.

Under ancient laws, those who committed serious crimes could be subjected to castration as a form of punishment.

He is deeply studying the criminal code.

He received a custodial sentence and was sentenced to five years in prison.

He is majoring in criminology at university.

He was arrested for committing a criminal act.

He denied the fact of the crime.

He is a renowned criminologist who has contributed to many crime analyses.