Strong earthquake rocks central Japan, injuring at least 22

Central Japan was shaken by a strong earthquake on Sunday that shattered store windows and caused people to flee buildings, leaving at least 22 people injured, according to local media.

A wide area near Aichi Prefecture was affected, including the tourist city of Kyoto, and the nearby prefecture of Yamanashi, where Mount Fuji is located.

Japan's Meteorological Agency warned people to brace for possible strong quakes in the coming week, especially the next two to three days.

A strong earthquake has shaken central Japan, shattering store windows, causing people to flee buildings and leaving at least 22 people injured, according to local media.

Japan's Meteorological Agency said Sunday's quake was a magnitude-5.7, while the US Geological Survey reported it at magnitude-5.5.

A wide area near Aichi Prefecture was affected, including the city of Hamamatsu, the ancient capitals of Kyoto and Nara and nearby prefectures of Yamanashi, where Mount Fuji is located, as well as Gifu.

Japanese TV footage showed shattered store windows and scattered shards of glass on the streets.

A bookstore was left with mounds of books that had flown off the shelves.

The injuries included people who fell from stairs while they were trying to flee.

The quake, which struck at 1:04am (local time), was located about 40 kilometres below the Earth's surface in Shizuoka prefecture.

Aichi and Shizuoka are neighbouring regions. They are far enough from Tokyo that the quake was not felt there.

The meteorological agency warned people to brace for possible strong quakes in the coming week, especially the next two to three days.

"Please be on the lookout for mudslides, falling rocks and the possible effects from rainfall," Ayataka Ebita, an agency official, said.

He said no apparent change was detected to the Nankai Trough plate, where scientists say a megaquake can possibly hit.

The Shinkansen bullet trains were running at slower speeds in the affected areas as a precautionary measure. Sometimes quakes can damage the railways the trains run on.

Japan is located in an area that is prone to earthquakes.

Authorities frequently instruct people to stock up on bottled water, food and batteries, have plans ready to hide under tables and keep comfortable walking shoes at hand.