The Economic and Financial Crimes Commission (EFCC) told AFP that Orowo Jesse Omokoh was arrested on January 28 in Nigeria, without stating where exactly.
The graduate, who attended the University of Ibadan, in the southwest of the country, will be brought before court for extradition proceedings, a spokesman said.
Omokoh is alleged to have struck up a fake online romance with Jette Jacobs, but five days after he moved to Johannesburg, South Africa to meet her (February last year), she was found dead.
Some of her valuables were missing and Omokoh had returned to Nigeria.
