A security guard encounters an unauthorized person attempting to enter a restricted area. After challenging them and determining they have no authorization, what is the next logical step?

1. Allow them to wait just inside the restricted area while awaiting a supervisor.
2. Physically restrain them until police arrive, regardless of their compliance.
3. Deny entry, escort them off the property if necessary, and document the incident.
4. Give them a warning and allow them to proceed, assuming no malicious intent.