A 6.3-magnitude earthquake was recorded near the Kuril Islands on October 9, the Sakhalin branch of the Russian Academy of Sciences geophysical service reported.
"At 6:45 p.m. local time, a 6.3-magnitude earthquake occurred with an epicenter 146 kilometers east of the island of Onekotan. The epicenter depth is 56 kilometers," the Yuzhno-Sakhalinsk seismic station representative said.
No tsunami warnings have been issued.
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On October 6, the Russian Emergencies Ministry in the far eastern Sakhalin Region reported that a column of ash at a height of 4.5 kilometers (2.8 miles) had spewed from the Ebeko volcano on Paramushir Island, located in the Russian Kuril Islands archipelago.