1. If the kidnapping or detention shall have lasted more than five days.
2. If it shall have been committed simulating public authority.
3. If any serious physical injuries shall have been inflicted upon the person kidnapped or detained; or if threats to kill him shall have been made.
4. If the person kidnapped or detained shall be a minor, female or a public officer.
The penalty shall be death where the kidnapping or detention was committed for the purpose of extorting ransom from the victim or any other person, even if none of the circumstances above-mentioned were present in the commission of the offense.