After a strong earthquake struck near Tokyo on Thursday morning, the Meteorological Agency is urging people in quake-hit areas to pay close attention to seismic activities.
The magnitude 5.2 quake hit the southern part of Chiba Prefecture at around 4:16 a.m. Japan time. The tremor registered upper 5 on the Japanese seismic scale from zero to 7 in Kisarazu City in the prefecture.
Agency official Kamaya Noriko said the risk of falling rocks and landslides is rising in areas hit by strong tremors.
She warned a quake as powerful as upper 5 could strike over the next week in the areas where major jolts were recorded.
She said similarly strong quakes could occur, especially in the coming days.