"A seismic event took place on Thursday at a daytime local time in the Kamchatka Strait off the eastern coast of the peninsula. The epicenter of the earthquake was located at the depth of over 50 kilometers [31 miles], 88 kilometers to the south of the locality of Ust-Kamchatsk," the GS RAS spokesperson said.
The spokesperson added that it was the fourth earthquake in the region over the past 24 hours.
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Residents of settlements of the Kamchatka Territory did not feel significant aftershocks.
There were no victims or material damage reported.
Previously this year, two earthquakes with 5.6 and 5.8-magnitude struck the Far Eastern Kamchatka Peninsula, according to the Geophysical Survey of the Russian Academy of Sciences.