TOKYO (AP) - A magnitude-6.5 earthquake shook eastern Japan off the country's quake-ravaged coast on Monday morning, briefly prompting a tsunami alert.
There were no immediate reports of damage or injuries, but the quake -- one of dozens that have shaken Japan in the past two weeks-- added to the sense of unease in a nation already on edge.
The U.S. Geological Survey measured the quake at 7:23 a.m. Monday Japan time near the east coast of Honshu. The quake was 3.7 miles deep.
A magnitude-9 quake off Japan's northeast coast on March 11 triggered a tsunami that barreled onshore, triggering a humanitarian disaster that is thought to have killed about 18,000 people.