How to know information about a facebook account?

[safy_alagha]

my girlfriend doesn't have an account on facebook, but someone made an account on facebook that looks almost exactly like her.
all I wanna know is a way to find out who is this "one".
note 1: this might be a silly question, but there might be someone can show me a simple way or something.
note2: I know how to block or delete this account by reporting it, but I wanna know who wants to harm my girlfriend.
note 3: if there's someone can help with this, I don't mind at all (someone who's a hacker or something".

[Rankine Zero]

It would be best to ask for Facebook's assistance. Explain the situation to them and they should take down the offending page without causing trouble for your girlfriend.

Getting involved with people who play at being "hackers" will only get yourself into trouble.