According to TASS, the central bank's annual Financial Stability Report noted an apparent bubble in the cryptocurrency markets, stating that it may lead to "substantial losses" for investors.
The report also stated that cryptocurrencies may be used for criminal activities, in particular for money laundering and terrorism financing.
The report continued on to declare that:
"The task of national and supranational regulators is to minimize those risks via developing a coordinated approach to regulation of the cryptocurrencies market and restricting the potential of high-risk investments and transactions."
http://tass.com/economy/977847