What actions should an aerodrome controller take when an arriving aircraft reports a suspected explosive device on board?

1. Give the aircraft priority, ascertain and coordinate the crew's intentions, protect other traffic and people, and after landing route it under local instructions to the designated isolated parking position while alerting the designated emergency organizations.
2. Instruct the aircraft to park directly at the main passenger terminal gate.
3. Refuse permission for the aircraft to land in Bolivia.
4. Instruct the pilot to fly around the city center until fuel runs out.