leaving the legal intricises involved, it is absolute non - sense to have a condition for a criminal and that to from a foreign country. will they allow to do the same, if there people were killed, and also he is an Indian citizen, and how on earth portugal country can put a condition on him.
dear Indian government, wake up, we are independent in all causes, and if his crimes needs a capital punishment no need to bother, after execution, you can write a SORRY letter to portugal saying India got independence long back.