They often pretend to be foreign specialists [from the US, UK or Canada, but can be any European country]temporarily working in Nigeria or other African country.
A slight twist is is when the scammer pretends to live in the same country as the victim, and once a relationship has developed, then advise they are required to go to a west African country on an assignment.
The Nigerian dating scams are often not easy to detect as the scammers are often highly educated, have exceptional patience and they do their homework!" From internet cafes all over west African countries like Nigeria, Ghana, Ivory Coast, Senegal etc scammers are zeroing in on their prey - singles looking for love online. The Nigerians call them 'maghas' which is slang for gullible white people.The scammers spend their day trolling the dating sites and chat rooms for contact emails, and then send off thousands of fraudulent letters and emails awaiting the victim's replies.They also lurk in chat rooms and social networking sites as well as Christian and other religious-based dating sites.They then spend months chatting up and luring their naive targets with online intimacy.