An earthquake of magnitude 6.0 struck off the coast of Indonesia's Sumatra island, near Aceh,the country's meteorological agency said, but officials said there was no damage to nearby energy facilities and a tsunami warning was not issued.

The quake struck 113 km (70 miles) southwest of Banda Acehin Sumatra and was at a depth of 16 km (10 miles), the agencysaid in a text message. An official at Indonesia's oil and gas watchdog toldReuters that the natural gas production area in Arun operatedby U.S. Exxon Mobil had not been affected by the quake. The facility produces around 500-600 million cubic feet ofnatural gas per day and supplies an LNG plant in Arun. The official, who declined to be identified by name, alsosaid that Arun LNG plant had not been affected by the tremor.

More than 20 people were killed when an 8.4 magnitudeearthquake hit western Sumatra on Sept. 12, and thousands ofhomes were damaged or destroyed in the area. The area was subsequently hit by a series of quakes andstrong aftershocks, setting off tsunami warnings in Indonesiaand other countries in the region.

Indonesia, which is situated in a belt of intense seismicactivity known as the "Pacific Ring of Fire", was hit by a hugeearthquake in December 2004, triggering a devastating tsunamiin the Indian Ocean, which killed more than 230,000 people inthe region, including 170,000 Indonesians.