People standing in front of the Onexim group office building are reflected on the company's nameplate, in Moscow, Russia, April 14, 2016. REUTERS/Maxim Shemetov(reuters_tickers)
MOSCOW (Reuters) - Russia's Federal Security Service has obtained data on tax law violations at some firms after searching the Moscow office of Onexim Group, which manages assets of tycoon Mikhail Prokhorov, the service said in a statement on Friday.
Russian law enforcement officials, some wearing ski masks, on Thursday searched the offices of Prokhorov, a tycoon whose newspaper has published revelations about people with ties to President Vladimir Putin.
The Federal Security Service did not name the firms and did not say whether they were part of Onexim.
The searches were conducted together with the tax service as part of a criminal investigation related to Tavrichesky Bank in St. Petersburg, the service said.
In March 2015, Russia's IFC bank, in which Onexim has a stake, was chosen to rescue Tavrichesky Bank by the central bank, which granted a ten-year loan of 28 billion roubles ($422 million) for the procedure.
IFC bank was one of Onexim's assets at which searches were conducted on Thursday.
"As a result of initial activities, information was received about violation of tax law requirements by a number of commercial structures," the Federal Security Service said.
This documentation was handed over to specialists for further investigation.
Onexim and IFC bank were not available for immediate comment on Friday evening.
(Reporting by Polina Devitt; Editing by Dominic Evans and Mark Potter)