National Bureau of Investigation(NBI)

Hi I would like to report someone who stole somebody else's identity to perform fraud transaction on his victims and unfortunately I'm one of them. He works with a security agency previously and maybe up to date. I will be providing his information once I receive your response on this matter. I lost money due to it and he is still doing it until now, I have all the screenshots of our conversation and his profile. As I made my own investigation prior reporting this. A promptly response would be greatly appreciated. Thank you