Atlas Mara said it was buying a 13.4 percent stake in the Union Bank of Nigeria from Clermont Group, taking its total holding to 44.5 percent.

The bank said it is in discussions with potential investors regarding a possible raising of new equity capital, comprising of $100 million equity offering and a $100 million mandatory convertible bond.

Diamond teamed up with Africa-based entrepreneur Ashish Thakkar to set up Atlas Mara, a vehicle through which they planned to buy up assets to help build it into a powerful force in African banking.

(Reporting By Andrew MacAskill; Editing by Rachel Armstrong)

Stocks treated in this article : Union Bank of Nigeria PLC, Atlas Mara Ltd