"This man is everywhere",
"Anonymous Nigerian scammers who, among many others, also register fake profiles with this innocent man´s stolen pictures, are everywhere".
Therefore, you can´t turn "him" in, and "he" is not a liar, since "he" is not existant. If you wish proper local police authorities to repeat this explanation of internet love scams to you, it´s worth going there if it helps you getting convinced. But that´s where any local investigation will end, cf. FAQ. The scam gangs (just click "scammers" in my signature), who do the actual email writing, continue to stay in their well-chosen anonymity in their corrupt far-away overseas communities and refine their internet fraud skills
I know, frustrating. And abstract. But this is how these scams work.
Now that you know about it, you are getting an idea right now how very common scams are in the internet world