According to the U.S. Geological Survey
, the quake struck 56 kilometers southeast of the city of Palu and the quake's epicenter registered at a depth of 20 kilometers. The earthquake was previously reported by USG as a 6.6 magnitude, but has now been changed to 6.3.
Sutopo Purwo Nugroho, spokesman for Indonesia's National Disaster Mitigation Agency, told the media
, "The quake was felt strongly for 15 seconds in Palu as people were breaking the fast."
No damage or injuries have been reported in Palu. However, an officer at the Disaster Management Agency
has said that there are reports from the province that at least two persons were injured by falling debris and damage to houses in Parigi Mountong, the area closest to the epicenter of the quake.
No tsunami warning has been issued.
Due to its position in the Pacific Ring of Fire, an arc of fault lines and volcanoes, Indonesia is prone to earthquakes. On December 26, 2004, a giant earthquake triggered a devastating tsunami in the Indian Ocean that killed 230,000 people, half of which were in the westernmost province of Aceh.