OAU Convention on the Prevention and Combating of Terrorism, 1999 Party, without the prior consent of the State from where such information originated. 4. States Parties undertake to promote co-operation among themselves and to help each other with regard to procedures relating to the investigation and arrest of persons suspected of, charged with or convicted of terrorist acts, in conformity with the national law of each State. 5. States Parties shall co-operate among themselves in conducting and exchanging studies and researches on how to combat terrorist acts and to exchange expertise relating to control of terrorist acts. 6. States Parties shall co-operate among themselves, where possible, in providing any available technical assistance in drawing up programmes or organizing, where necessary and for the benefit of their personnel, joint training courses involving one or several States Parties in the area of control of terrorist acts, in order to improve their scientific, technical and operational capacities to prevent and combat such acts. PART III STATE JURISDICTION Article 6 1. Each State Party has jurisdiction over terrorist acts as defined in Article 1 when: (a) the act is committed in the territory of that State and the perpetrator of the act is arrested in its territory or outside it if this is punishable by its national law; (b) the act is committed on board a vessel or a ship flying the flag of that State or an aircraft which is registered under the laws of that State at the time the offence is committed; or (c) the act is committed by a national or a group of nationals of that State. 2. A State Party may also establish its jurisdiction over any such offence when: (a) the act is committed against a national of that State; or 211