SECTION 3

1. Each State Party shall take such measures as may be necessary to establish its jurisdiction over the crimes set forth in article 2 in the following cases: (a) When the crime is committed in the territory of that State or on board a ship or aircraft registered in that State; (b) When the alleged offender is a national of that State; (c) When the crime is committed against an internationally protected person as defined in article 1 who enjoys his status as such by virtue of functions which he exercises on behalf of that State. 2. Each State Party shall likewise take such measures as may be necessary to establish its jurisdiction over these crimes in cases where the alleged offender is present in its territory and it does not extradite him pursuant to article 8 to any of the States mentioned in paragraph 1 of this article. 3. This Convention does not exclude any criminal jurisdiction exercised in accordance with internal law.