A strong 6.0-magnitude earthquake shook buildings in Tokyo early Monday, lightly injuring 17 people, but officials stressed there was no risk of a tsunami.
Tokyo inhabitants were woken shortly after dawn by the quake, which jolted the densely-built apartments and office blocks.
Local media said 17 people injured themselves as they stumbled while trying to take cover, with a 74-year-old Tokyo woman dislocating her shoulder.
The epicentre of the quake — which hit at 5:18 am (2018 GMT Sunday) — was near Izu Oshima island southwest of central Tokyo, the Japanese meteorological agency said.
