Part II
Extradition
CHAPTER I
Extradition from Portugal
Section I
Requirements
Article 42
Escape of the extradited person
Should any extradited person who escapes after surrender to the requesting State or international judicial entity and before the end of the criminal proceedings or before having served the sentence, return to Portugal, he shall again be arrested and surrendered to the same State or entity upon warrant from the competent authority of that State, save where violation of the conditions under which extradition was granted has occurred.
EDIT.