JR East — Japan’s largest JR Group company, based in Tokyo
A 5.8 magnitude earthquake struck southern Ibaraki, Japan, at a depth of 70 km. No tsunami threat has been reported. About 37 people have been injured across Tokyo and five prefectures as residents woke to the tremor; trains faced delays but Shinkansen services run normally. A government task force is evaluating damage and authorities urge caution for a week.