What is Pak going to do if they gety enough evidence? Are the accused gonna try in the court according to the 'law' of Pak? . Enough Evidence had been given regarding 1993 blasts, and the main culprit 'Dawood' has taken shelter in Pak. And regarding present terrorist attack, initial evidence had been given to international community, otherwise why Pak is busy banning, house-arresting,sealing......etc ...etc.
No need to mock Pakistan's legal system. Indian political and legal system is no better than here. No evidence was given in 1993, just a list.
Subcontinent has been unlucky in this regard. From Indra Gandhi to Benazir to Mumbai... No results from 'investigations'.