Societe Generale says hit by 4.9-billion-euro fraud

PARIS, Jan 24 (Reuters) - Societe Generale (SOGN.PA) has uncovered a fraud by one of its traders which will have a 4.9- billion-euro-($7.16 billion) negative impact on the group, France's second-largest listed bank said on Thursday.

The bank also announced further writedowns of 2.05 billion euros related to the global credit crunch and said it would raise 5.5 billion euros through a capital increase to strengthen its balance sheet.

SocGen also said its board had rejected a proposal by Chairman and Chief Executive Daniel Bouton to resign.

SocGen shares closed down 4.15 percent at 79.08 euros on Wednesday.

(Reporting by Sudip Kar-Gupta, editing by Astrid Wendlandt)