Osaka quake could be sign of more shaking to come, experts warn

Experts are cautiously warning that Monday morning's powerful earthquake in Osaka and surrounding areas could be a sign that greater seismic activity is due in western Japan in the near future.

While details of the fault movements behind the fatal magnitude 6.1 quake have yet to be determined, the inland temblor occurred at a depth of about 13 km, registered as a lower 6 on the Japanese seismic intensity scale to 7, and struck in an area where active faults are concentrated, experts say.