Rihanna and Jay Z sued over axed show

Rihanna and her label boss Jay Z are facing legal action from a Nigerian concert promoter amid allegations the singer scrapped a 2013 performance - and kept her hefty fee.

Megalectrics boss Chris Ubosi claims he arranged the gig for May, 2013 with two people who introduced themselves as representatives for Rihanna, Jay Z, and his Roc Nation firm.

The two parties struck a deal for the Diamonds hitmaker to perform a 65-minute set for $425,000 , and Ubosi made three early payments, totalling $160,000 .

He then received a request from Rihanna's team seeking to postpone the show, which Ubosi agreed to, as long as the pop star publicized the new date on her social media accounts, reports TMZ.com.

However, the rescheduled concert never materialized, and now Ubosi has filed suit against the two stars and Roc Nation executives in a bid to reclaim his funds after his initial requests went unanswered.

Rihanna's management officials have yet to comment on the lawsuit, but sources close to the star tell TMZ the singer was unaware of the arranged gig and never accepted any money for the purported show, leading them to believe Ubosi had fallen victim to a scam.