Dhaka, Sept. 13 -- A 7.4-magnitude earthquake struck off the coast of Kamchatka in Russia's Far East on Saturday, the United States Geological Survey (USGS) said.

The quake hit 111 kilometres (69 miles) east of the Russian city of Petropavlovsk-Kamchatsky, the administrative centre of the Kamchatka region, at a depth of 39.5 kilometres, according to the USGS.

The Pacific Tsunami Warning Center said "hazardous" waves were possible along Russian coasts within 300 kilometres of the epicentre. USGS earlier gave a magnitude of 7.5 before downgrading it.

In July, one of the strongest earthquakes ever recorded struck off the Kamchatka peninsula, triggering tsunamis up to four metres (12 feet) high across the Pacific and sparking evacuations f...