PETROPAVLOVSK-KAMCHATSKY, Russia, July 5 (UPI) -- Russian officials say a magnitude 7.1 earthquake centered in the ocean about 250 miles off the country's Far Eastern coast Saturday did no apparent damage.

Local officials in the Kamchatka peninsula reported no injuries or tsunami threat associated with the quake, with struck at 2:10 a.m. Moscow time, RIA Novosti, the Russian news agency, reported. The temblor measured a magnitude 4.0 at the nearest population center, Petropavlovsk-Kamchatsky, which is in one of Russia's more seismically unstable regions.

The U.S. Geological Survey National Earthquake Center reported the quake was centered in the Sea of Okhotsk, about 1,410 miles north-northeast of Tokyo and was 393 miles underground, CNN said.