MOSCOW, June 23 - The Ukrainian government has held informal talks with private investors about the possibility of postponing the repayment of its bonds, the Institute of International Finance, representing the interests of the world's largest 450 banks and funds, has told The Wall Street Journal newspaper.

Ukraine has declared that no negotiations on debt restructuring are being held.

According to association economist Lubomyr Mitov, the parties discussed what restructuring options could be considered if the economic crisis in Ukraine deepens.