JAKARTA, Indonesia (CNN) -- A strong earthquake measuring 7.9 in magnitude struck Wednesday near southern Indonesia, the U.S. Geological Survey said.
A tsunami watch was immediately issued for the area.
The earthquake, which struck Bengkulu province, Sumatra, has caused buildings to sway in Indonesia's capital city, Jakarta, the Associated Press reported.
Ken Navidad at the USGS in Denver said the tsunami centers in the Pacific and Alaska initially said two quakes, but he did not know why. He said his agency has measured only one.
Tsunami warning centers in Hawaii and Alaska said no tsunamis were expected in their areas.
Indonesia, which sits on the Pacific Basin's "Ring of Fire" - an arc of volcanos and fault lines, is prone to seismic upheaval.
In December 2004, a massive earthquake off Sumatra island triggered a tsunami that killed more than 230,000 people, including 160,000 people in Indonesia's province of Aceh.
Developing story: http://edition.cnn.com/2007/WORLD/as...ake/index.html