Paragraph 4

When a State, pursuant to this Article, has taken a person into custody, it shall immediately notify the State of registration of the aircraft, the State mentioned in Article 4, paragraph 1(c), the State of nationality of the detained person and, if it considers it advisable, any other interested States of the fact that such person is in custody and of the circumstances which warrant his detention. The State which makes the preliminary enquiry contemplated in paragraph 2 of this Article shall promptly report its findings to the said States and shall indicate whether it intends to exercise jurisdiction.