1. The Japanese government has warned that there may be more strong earthquakes in areas affected by Monday's magnitude 7.5 quake, particularly within the next week.
2. This quake occurred off the eastern coast of Aomori Prefecture, and its intensity was recorded as upper 6 on Japan's seismic scale. It has caused 50 reported injuries across three prefectures.
3. The area where the earthquake occurred is known to have a high risk of around magnitude 7.0 to 7.5 earthquakes within 30 years, as it lies where the Pacific Plate sinks beneath a continental plate. Officials also caution about increased risks along the Japan Trench and the Chishima Trench off Hokkaido. The panel head has urged people to take seismic safety measures such as securing furniture at home and having proper evacuation plans.