On December 26, 2009, exactly five years after the 2004 Tsunami that killed over 226,000 people, am earthquake hit the Indonesian waters. The earthquake had a strength of 6.0 Righter Scale, and happened 270 km (168 miles) north northwest of Saumlaki, Indonesia on Saturday, according to the U.S. Geological According to local authorities, no tsunami warning was issued. .http://www.washingtonpost.com/wp-dyn/content/article/2009/12/26/AR2009122600301.html

On December 26, 2004 a 9.15-magnitude earthquake off the Indonesian coast caused a Tsunami, which hit the coast of over 14 countries, causing 166,000 deaths in Indonesia. In total, 226,000 people were killed, mostly in Indonesia, India, Sri Lanka and Thailand.http://www.time.com/time/world/article/0,8599,1950026,00.html#ixzz0anAsEyHO

Indonesia is located in the Pacific "Ring of Fire", and has frequent occurrences of earthquakes, volcanic and other seismic activities. In 2008 and 2009 several earthquakes hit the area:
- A magnitude 7.5 earthquake near Indonesia was reported on November 16, 2008. A tsunami warning was issued for the region, then lifted.Washington Post: Indonesia lifts tsunami warning after Sulawesi quake (November 16, 2008) CBC: Tsunami warning follows strong quake off Indonesia (November 16, 2008) The quake, and a 5.6 magnitude aftershock, hit 85 miles northwest of Gorontalo, Sulawesi, in the Pacific Ocean.Bloomberg: Indonesian Island Struck by Two Earthquakes; Tsunamis Possible (November 17, 2008) The quake occurred Monday, November 17, 2008 at 1:02 AM local time. 17 deaths resulted from the quake.
-On January 4, 2009, a 7.2 magnitude earthquake struck about 85 miles off the coast of Papua, Indonesia. It cut power to thousands of citizens, and triggered a brief tsunami warning, which didn't materialize.Associated Press: Tsunami alert issued after strong Indonesian quake (January 3, 2009)
-On January 31, 2009, a moderate 5.2 magnitude earthquake hit Maluku waters in eastern Indonesia. Xinhua Net: Moderate earthquake jolts eastern Indonesia (January 31, 2009)
-On April 16, 2009, a 6.1 magnitude quake shook the Mentawai region of Indonesia.USGS: Magnitude 5.5 KEP. MENTAWAI REGION, INDONESIA