Terrorists planning to kill innocents will not leave any "proof" behind so that they can be caught by IBs. They are not dumbass like you Loan Shark. Do you have any proof of who attacked WTC? Do you have any proof of US landed in moon for the first time ? (controversy theory is the best example) Do you have any proof that RSS and VHP were behind the Guj riots ? Do you have any proof that Shah Jahan built Taj Mahal ?
For most of the things, no proof exists. Every kindergarden child knows who is behind the blasts - HuJI or SIMI or LeT or JeM. The group may be different. But their purpose is same - KILL HINDUS AS MUCH AS POSSIBLE.
If you are so good in collecting facts and proofs, can you proove existence of Jesus Christ or Mohammed or Krishna or resurrection of Jesus Christ....?
After all, porkistanis denied Dawood is in their lands 3 years back. Now they openly accept they are providing shelter to him and will continue to do so.