A massive earthquake with a preliminary magnitude of 7.6 hit central Japan on Monday, triggering a tsunami warning and advisories for residents to evacuate and prepare for possible aftershocks.

A tsunami around one-metre high struck parts of the west coast along the Sea of Japan, with a larger wave expected, public broadcaster NHK reported.

The Japan Meteorological Agency has issued tsunami warnings for the coastal prefectures of Ishikawa, Niigata and Toyama.

Top government spokesperson Hayashi Yoshimasa said in an emergency press conference that authorities were still checking the extent of the damage and warned residents to prepare for possible further quakes.

Footage aired by NHK appeared to show buildings collapsing in Ishikawa, and tremors shook buildings in the capital Tokyo on the opposite coast.

More than 36,000 households lost power in Ishikawa and Toyama prefectures, utilities provider Hokuriku Electric Power said.

Japan's Nuclear Regulation Authority said no irregularities have been confirmed at nuclear power plants along the Sea of Japan, including five active reactors at Kansai Electric Power's Ohi and Takahama plants in Fukui Prefecture.

Hokuriku's Shika plant in Ishikawa, which was located the closest to the quake's epicentre, had already halted its two reactors before the quake for regular inspection and saw no impact from the quake, the agency said.

A huge earthquake and tsunami struck northeastern Japan on March 11, 2011, killing nearly 20,000 people, devastating towns and triggering nuclear meltdowns in Fukushima. 

At least 34 people, including two babies were killed when a contraband fuel depot exploded into flames in southern Benin near the border with Nigeria on Saturday.

According to Beninese Interior Minister Alassane Seidou, “a serious fire occurred in the town of Seme Podji. Another 20 people were seriously wounded in the incident.”

"I can't really give you the cause of the fire, but there is a large gasoline warehouse here and cars, tricycles and motorcycles come from morning to evening,” he added.

Nigeria is a main oil and gas producer where fuel smuggling is very common along its borders, particularly when the government maintains a subsidy to keep fuel prices low.

The majority of the victims were burnt and they could not be not be identified.

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