(CNN) -- An earthquake struck off the Indonesian island of Bali early Thursday, rattling buildings and sending dozens to hospitals with minor injuries.Another medical official at a nearby hospital said several others were undergoing treatment for minor injuries, but did not specify how many.
Indonesia is on the so-called Ring of Fire, an arc of fault lines circling the Pacific Basin that is prone to frequent earthquakes and volcanic eruptions.
In 2004, a 9.1-magnitude underwater earthquake struck off the coast of Sumatra, triggering a tsunami that killed more than 200,000 people in 14 countries.
The tsunami, which washed away entire communities, caused nearly $10 billion in damage and more casualties than any other tsunami in history, according to the United Nations.