Most reports say Japan was hit with a 6.7 quake June 23.  Other reports calling it a 6.8, while others say there were actually two 6.7 quakes, in the same spot, less than one minute apart.

The earthquake happened in the same location as the March 11 9.0 quake.  Japan has experienced thousands of aftershocks since then, some reaching as high as 7.0.