If he is really a scammer, he may not have used his own id proofs for verifying his account. What I see is he is still trading using this account. I have told police to communicate with localbitcoins. And I have reported this incident to localbitcoins also.
That user does have a "- Scammer trying to reverse the transaction becareful " on his lbtc profile.
Seems he has given up on his game as he was last seen 1 month ago. I suppose even being careful while trading , no one can foresee such a thing as bank transfers is a standard thing while buying or selling. Have you tried communication with the original bank account owner asking how he thinks his account was hacked or why he didn't realize his account was charged ?