Legal woes might yet scupper the £3.75bn London flotation of Rusal, the aluminium giant.
It emerged over the weekend that the Russian conglomerate was in talks with the Financial Services Authority (FSA) over potential claims the company might face in the future.
One potential problem could be from businessman Michael Cherney, a Russian living in Israel. He is suing his former employee and Rusal chairman Oleg Deripaska over a stake worth £6bn in Rusal. The case will be heard in England and Deripaska refutes the claims.