A magnitude-7.5 earthquake struck off the eastern coast of Honshu, Japan, late on Monday night.

The temblor occurred at around 11:15 p.m. at a depth of 54 km, according to revised data released by the Japan Meteorological Agency (JMA) early on Tuesday.

The epicenter was located off Aomori Prefecture's eastern coast at a latitude of 41.0 degrees north and a longitude of 142.3 degrees east.

The latest reports indicate that at least 30 people have been injured in the disaster.

"I have received reports of 30 injured," said Prime Minister Sanae Takaichi.

Local authorities ordered over 100,000 residents across multiple prefectures to evacuate.

All tsunami alerts lifted

The JMA issued tsunami warnings for Hokkaido, Aomori and Iwate prefectures, estimating that waves of up to 3 meters could strike parts of the coastline and urging residents to remain on high alert.

As of 1:56 a.m. on Tuesday, tsunami waves had been observed at multiple locations. The highest wave in Kuji City, Iwate Prefecture, reached 70 centimeters, while areas in Hokkaido and Aomori registered waves ranging between 10 and 50 centimeters.

At 2:45 a.m. on Tuesday, the JMA downgraded the tsunami warnings to the lower-level tsunami advisories. By 6:20 a.m., the agency announced that all tsunami advisories for the Pacific coastal areas were lifted.

Over 100 liters of water overflowed at nuclear waste facility

Following the quake, the Japan Nuclear Fuel Limited confirmed that staff inspecting a spent-fuel pool at a nuclear waste reprocessing facility in Rokkasho Village, Aomori Prefecture, discovered "over 100 liters of water" on the floor surrounding the pool, according to China Media Group. The water is believed to have overflowed due to seismic shaking.

According to the company, the leaked water remained inside the building and posed no impact on the external environment. As water levels in the pool maintained stable and cooling functions operating normally, there were "no safety issues," and radiation monitoring equipment around the site showed no changes in readings.

Japan's Nuclear Regulation Authority had earlier reported that there were no abnormal conditions detected at nuclear power stations within the affected region.

Ocean discharge of Fukushima nuclear-tainted wastewater halted

Tokyo Electric Power Company (TEPCO) reported that both the Fukushima Daiichi Nuclear Power Plant and Fukushima Daini Nuclear Power Plant showed no signs of earthquake-related abnormalities as of late Monday. Fukushima Daiichi is currently undergoing decommissioning operations.

TEPCO ordered workers to evacuate from shoreline facilities following the issuance of a tsunami warning, and suspended the discharge of treated radioactive water at 11:42 p.m. on Monday.

Warning of possible larger earthquake

At 2 a.m. on Tuesday, the JMA issued the Off the Coast of Hokkaido and Sanriku Subsequent Earthquake Advisory, noting that the likelihood of a large earthquake occurring from Hokkaido to the Sanriku offshore region was assessed to be higher than normal. The Japanese government and the JMA urged residents to follow official guidance and maintain disaster preparedness.

The JMA warned at a briefing of a possibility of "further powerful and stronger quakes" over the next several days.