Japan earthquake: However, no tsunami warning was issued because the tremors' seismic intensity was 4 on a scale of 7, Japan's Meteorological Agency said. A second earthquake of magnitude 6.0 struck parts of Japan's Hokkaido prefecture on Sunday evening, just hours after tremors of magnitude 5.9 rattled the country's eastern part, leaving over 30 people injured in Tokyo.Most of the injured were hurt when they fell down or hit themselves against furniture or doors as they were caught off guard by the first quake in the morning. (AP)According to the Japan Meteorological Agency (JMA), the second earthquake had a depth of 40 kilometres, with its epicentre off the coast of Urakawa in Hokkaido. The quake hit at 10:45pm (local time).However, no tsunami warning was issued because the tremors' seismic intensity was 4 on a scale of 7, JMA said.Follow the latest breaking news, major developments and agenda-setting stories from India and around the world with the newsdesk at Hindustan Times. Operating round the clock, the desk brings together experienced editors, reporters and correspondents to deliver fast, accurate and contextual reporting across subjects that influence public policy, governance, business, society and international affairs.