I very well know the difference between claim and complete identification.
You are still stressing so hard on his being an Afghan as if I have a problem with that. The only problem I have is with the presumption that he was an Afghan/Pakistan/Indian/Anyone. And indeed it was a presumption because you were stressing on his being an Afghan way before the matter even got cleared.
No one is assuming/presuming anything, he has been identified as an Afghan named Ahmed Gul from Kunduz by the police. Something's clearly bothering you, because you're the one that's assuming things, he can't be Pakistani/Indian because he has been identified by the police as an Afghan from Kunduz!