MOSCOW, December 22 (RAPSI) – Russian opposition party headed by whistleblowing blogger turned opposition activist Alexei Navalny has filed a suit seeking disclosure of incomes of CEOs of a number of government-owned corporations, RAPSI reported from Moscow's Presnensky District Court on Monday.

A federal law requires CEOs of government-owned corporations to disclose their income, according to Ivan Zhdanov, a lawyer who represents Navalny's Progress Party.

However, the party failed to get information about the income of a number of chief executive officers. Members of the party claim that all the requests for the information were left without answers.

A hearing in the case has been postponed until January 21, because defendants were not duly notified of the suit.

Alexei Navalny ran for Moscow mayor in the fall of 2013.

He was given a suspended five-year sentence for embezzling funds from the Kirovles timber company and was also involved in several other criminal cases.

Alexei Navalny and his brother Oleg have been accused of defrauding cosmetics company Yves Rocher Vostok and the Multidisciplinary Processing Company between 2008 and 2013. Overall damages were estimated at around 31 million rubles (over $870,700). Prosecutors asked the court to sentence Alexei Navalny to 10 years and his brother to eight years in a minimum-security prison.

Navalny brothers are scheduled to be sentenced at Moscow's Zamoskvoretsky District Court on January 15.