He was terrified of living in a police state.

He was caught by the secret police.

Police dogs are very effective in tracking criminals.

I went to the police station yesterday.

The head of the police station explained the details of the incident to the press.

He was arrested as a deliberate offender.

He was arrested as a rapist.

He was imprisoned as a political prisoner for political reasons.

A person who committed the crime of public urination was arrested in the park.

The police arrested the prankster.