Earthquake under the Ocean Area near Izu-Oshima on May 5

On May 5, 2014 at 05:18 (JST), there was a M6.0 earthquake (maximum seismic intensity 5 Lower) at a depth of 156 km under the ocean area near Izu-Oshima. This event occurred within the Pacific plate. The focal mechanism had a tension axis in the subducting direction of the Pacific plate. This event caused damage with 15 injured persons in Tokyo Metropolitan and Kanagawa prefecture (Fire and Disaster Management Agency).
For the seismic activity since October 1997, in the vicinity of the recent event (Area b), there have sometimes been earthquakes of M4.0 or over, such as M5.8 event (maximum seismic intensity 3) on January 16, 2007.
For the seismic activity since January 1923, in the area around the recent event (Area c), there have sometimes been earthquakes of M5.0 or over.

Japan Meteorological Agency
[Evaluation of Seismic Activities for May 2014 (June 10, 2014)]