I would only say that evidences are always fabricated. Fabrication refers to collection of data and than efforting to link that with a pre-thought element (country or person) to provide a negitive exposure for that element to others.
Fabrication is quite seperated from Investigation. Investigation is a part of Fabrication. On some grounds that maybe clear or unclear the whole scenario is wooven by the recepient (host) and is presented in front of others.
Example 1: A passport of a hijacker survived whereas thousands of men couldn't and in such a fire that burnt the whole damn twin towers made of solid steel. (9/11)
Example 2: A solitary terrorist gets caught whereas he is trained to kill himself if mission fails and also when his companions, all of them, are dead. Is it a coincident or fabrication? (Mumbai Attacks)
Example 3: That person belongs to a group of extremists which has already been banned in a country, which is afterwards criticized of being hosting the masterminds of all that events rather deadly events.
etc.....
Now my point is that the evidences are not always clear, one may not find a piece of paper on which the names of responsibles are written neither the terrorists.
A person with a beard and well-known among Taliban as a scholar of religion comes to their leader and gives them a huge sum and says "This is a gift from a "Muslim Buisnessman" who wishes them luck and wants to help them in their good cause. The name of that person is not to be revealed for he wishes to do hidden good that has more 'Ajar' in hereafter." Whereas that person gets that money and bulks of weapon from someone else.
Evidences are always fabricated, united and produced.
So in every incident of past, I am sure to say that all the evidences are fabricated.
Fabrication = Collection of data of evidences + Using it against a pre-determined enemy.
So yes, Pakistan is fabricating the evidences.
KIT Over n Out.