Complete the news anchor's dramatic evening broadcast.

After the great diamond heist of 2020, the infamous cat burglar was finally caught and sent to ___ prison for ten years.

The correct answer is (no article).

When someone goes to an institution like a prison, hospital, or school for its primary, intended purpose (in this case, as an inmate), we use the zero article (no article). We would only say "sent to the prison" if we were talking about someone visiting the specific physical building for another reason (like a contractor repairing the roof).