According to our sources close to the situation, Nigerian Promoter Chris Ubosi is suing Rihanna, Jay-Z and Roc Nation for allegedly postponing a show in Nigeria and never rescheduling it.

The lawsuit also suggest that the two of them excepted a payment of $160,000 and never returned the money.

Stay tune, www.whatshotinhiphop.com will continue to follow this story and keep you posted.