A powerful earthquake has hit waters off western Indonesia, prompting local officials to issue a tsunami warning.
The United States Geological survey said the quake, which struck at 7.37am New Zealand Time had a preliminary magnitude of 7.3 and struck 420km from Banda Aceh on the west coast of northern Sumatra, an area devastated by the 2004 Boxing Day Tsunami, at a depth of 29km.
Arief Akhir, an official with Indonesia's geological agency, said a tsunami warning has been issued.
However the Pacific Tsunami Warning Centre said a destructive widespread tsunami is not expected, although there is a "very small possibility" of a local tsunami.
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Indonesia is prone to seismic upheaval due to its location on the Pacific "Ring of Fire," an arc of volcanoes and fault lines encircling the Pacific Basin.
A giant quake off the country on December 26, 2004, triggered a tsunami in the Indian Ocean that killed 230,000 people, half of them in Aceh.
- Herald Online and Associated Press