The earthquake occurred in the southern Ibaraki prefecture, at a depth of 70 kilometres, an area of Japan prone to frequent quakes. The Fire and Disaster Management Agency said at least five people were injured in Ibaraki, Chiba and Saitama prefectures northeast of Tokyo Key points and original sources are listed below.

• The earthquake occurred in the southern Ibaraki prefecture, at a depth of 70 kilometres, an area of Japan prone to frequent quakes.S1

• The Fire and Disaster Management Agency said at least five people were injured in Ibaraki, Chiba and Saitama prefectures northeast of TokyoS2