"We confirm plans to receive 90 billion roubles as additional capital in the form of Gazprom perpetual subordinated deposits," the bank said in a statement.

Reuters reported earlier that Gazprom planned to inject an extra 100 billion roubles into Gazprombank. Since it is designated by the central bank as a lender of high importance for the domestic banking sector, it needs to meet higher capital requirements set out under global bank capital rules known as Basel III.

The loan will be provided by a company called Gazprom Gazoraspredeleniye, a part of the wider Gazprom group.

(Reporting by Oksana Kobzeva and Tatiana Voronova, writing by Maria Tsvetkova. Editing by Jane Merriman)