MOSCOW (Reuters) - Russian anti-corruption campaigner and opposition figure Alexei Navalny said on Thursday he had filed a lawsuit against Vladimir Putin after a company in which the Russian leader's son-in-law is a shareholder received $1.75 billion in state support.
Putin's son-in-law, Kirill Shamalov, is a major shareholder in petrochemicals producer Sibur, which received $1.75 billion in funding from Russia's National Wealth Fund at an unusually low interest rate last year, according to a Reuters investigation.
Navalny said Putin had violated Russian corruption laws by failing to declare a conflict of interest when he personally approved the financing.
"Kirill Shamalov is the spouse of Putin's daughter. Putin giving money to a company where the beneficiary is his child's partner is a classic conflict of interest. Straight out of a textbook," Navalny wrote in a post on his blog.
Kremlin spokesman Dmitry Peskov did not immediately respond to written questions submitted by Reuters. Russia's TASS news agency cited Peskov as saying Putin had not yet been informed about the lawsuit.
A Sibur spokesman said in December the state loan was approved in strict accordance with the law. The Russian Direct Investment Fund, which took the decision to make the loan, said it fully complied with procedures for investing state money in infra-structure projects.
A Reuters investigation last year found that Shamalov married Putin's youngest daughter, Katerina Tikhonova, in early 2013, shortly before acquiring a majority stake in Sibur.
(Reporting by Jack Stubbs, Alexander Winning and Andrey Kuzmin; Editing by Christian Lowe and Raissa Kasolowsky)