Part II
Extradition
CHAPTER I
Extradition from Portugal
Section I
Requirements
Article 33
Offences committed in a third State
In the case of offences committed on the territory of a State other than the requesting State, extradition may be granted only if under identical circumstances Portugal would have had jurisdiction under Portuguese law, or if the requesting State can prove that the former State does not request the extradition of the person concerned.
Unique provision - cooperation
Information, property or persons subject to the control of a third State or international organisation
EDIT.