A 5.9-magnitude earthquake struck eastern Japan early Sunday, injuring at least 23 people in and around Tokyo, according to the Japan Meteorological Agency. The quake originated in southern Ibaraki Prefecture at a depth of about 70 kilometres. No tsunami warning was issued. The US Geological Survey measured the earthquake at magnitude 5.8.

Nine people were injured in Saitama and nine in Kanagawa, while four were hurt in Chiba and one in Ibaraki. Most injuries occurred when people, startled from sleep, fell or were struck by furniture or doors. In Yokohama, a woman in her 80s suffered a serious hip injury after falling from her bed.

Some rail services, including rapid trains serving Tokyo and Narita airports, were disrupted, though Shinkansen bullet train operations remained normal. A damaged underground water pipe flooded a road in Tokyo's Koto area before being repaired. Power was temporarily cut to about 460 homes and later restored. Nuclear regulators reported no abnormalities at nuclear plants or related facilities, while the government formed a special task force to assess damage.