It sounds like you are trying to do the job of the police.

Why not let them do their own job?

Thanks,
problem is that this person is in Nigeria and i am in Ireland.
Irish police can't do anything as this is beyond their jurisdiction ans i am not sure Nigerian Police will help me :/
 

A % of the nigerian police are probably on the payroll of the scammers to make sure they're not bothered by the police

If they have sent you fake emails, for example from paypal or any other similar service you could tell them what happend and forward the scam emails that they've sent you.

Go watch all of the videos mentioned in this thread:

http://www.ethicalhacker.net/component/option,com_smf/Itemid,54/topic,4551.0/

The site, http://www.stophcommerce.com, is dedicated to getting the word out about what happens when someone is scammed.

Basically, as much as you'd like to get your money back and get revenge on the culprit, in the end you'll do yourself a big favor by letting it go, never contacting them again and don't try to find them. I've seen documentaries like Dateline where the investigative journalist travelled the globe following every lead to find the scammer (because the authorities wouldn't help him) and actually met face-to-face with him. In the end, the journalist was frustrated, because the man just walked. There was nothing that could be done, even with the clout & money of a large media company.

So as unfortunate as it may be, you don't have anywhere near the funds or the power to make this happen. It's totally unfair, but that's just the way it is.

Now just focus on getting your life back and moving on.

Hope this heavy dose of the truth helps,
Don