The bust follows another in St. Petersburg last month and other major seizures in recent years.
Police operations indicate that Ecuador is, so far, the main source country for cocaine arriving to Russia by container ship.
InSight Crime analysisThe Oktyabrskaya Hotel across from the Moskovsky railway station in St. Petersburg in May 2020.
St. Petersburg is the only major maritime port of entry for cocaine into the country, she added.
Erdinc said that Russia played a "significant" role as a transit country for cocaine that arrives to Turkey and is then moved to other European markets.