If they had so much "proof" why havent they just handed it to us yet? LOL
That's what I'm trying to figure out. The easiest answer is that it just wouldn't do any good, as Imran Khan suggests. Given Pakistan's sorry record, I imagine the culprits would simply be placed under "house arrest" - that's what the world would be told, anyway. Meanwhile reporter after reporter would check up on the person arrested only to discover that they are living in luxury on money supplied from unknown parties and permitted to go to and from town and mosque as they wish and sometimes even beyond, even as policemen standing nearby deny this, citing their orders to deny such things.
In other words, India may feel, given the record, the more that is revealed to Pakistan the more the offenders will be protected and celebrated as jihadi/nationalist heroes, and the less likely they will be to face justice - and the more likely that the revealed information will be applied to assure greater terrorist successes in the future.