Portugal is a member of the European Union and it is their law that stipulates such a provision. However, given that Abu Salem is an Indian and also that Indian court is trying him for henious crimes committed against Indians in India, it is Indian court and the people of India who should have the final word on this matter and not some foreign goverment under whose territory he committed some petty crime. Well, if need be Police can always stage an encounter under the pretext that Abu Salem was escaping, or for that matter it might have already done had he been not connected to various people in the establishment. In order to prevent such a situation in future, say Dawood going to France and lighting up some car in the suburb and then coming to India with no fear of death penalty, Indian Goverment should pursue the matter with the EU and sort these things out.
