Greece was just hit by its second major earthquake in less than a week.

The U.S. Geological Survey says the magnitude 6.2 temblor was centered about 140 miles southwest of Athens. A quake with the same strength was recorded in that area on Valentine's Day.

Earlier today, a magnitude 7.5 earthquake shook Indonesia. Reuters says it killed at least three people and injured more than two dozen others.

There were no immediate reports of casualties or damage in Greece.