The country's Internet regulator is pursuing fines of 700,000 rubles (about $10,400) for failing to filter out banned sites from its search results.
A law calls for search engines to remove the banned sites as of the beginning of this month, but some sites remain available via Google and chief rival Yandex (NASDAQ:YNDX).
The watchdog has found itself unable to enforce many of its broad censorship powers against foreign companies like Google.
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