KIEV, Oct. 1 – Russia's OAO Tatneft has increased the amount of its claim against Ukraine in the conflict over Ukrtatnafta, where the company is a shareholder, to $2.4 billion, according to materials from Naftogaz Ukrayiny and the cabinet, which were published with a proposal on the restructuring of Naftogaz's eurobonds worth $500 million.

According to the document, the claims were increased on June 29, 2009, which relates to alleged losses incurred by Tatneft in connection with the sale of an 18.3% shareholding by Amruz Trading AG and Seagroup International Inc. to LLC Korsan.