At least 100 people are confirmed dead and thousands are trapped in rubble after a major earthquake off Indonesia's Sumatra Island.
It is feared that at least 1,000 people may have been killed in the quake.
'Maybe more than 1,000 [dead]... because so many buildings and houses have been damaged,' Health Ministry crisis centre head Rustam Pakaya said.
The earthquake registered 7.6 on the Richter scale and struck off the city of Padang on the coast of Sumatra, damaging houses, toppling bridges and starting fires.
Vice President Jusuf Kalla earlier confirmed the death toll of 75 and said it was likely to rise further as many hotels, schools and shops had collapsed.
The quake caused widespread panic across the city of 900,000 people. TV footage showed devastation, with piles of rubble and smashed houses.
The quake was felt around the region, with some high-rise buildings in Singapore, 440km to the northeast, being evacuated. Office buildings also shook in the Malaysian capital, Kuala Lumpur.
The Pacific Tsunami Warning Centre later cancelled an earlier tsunami alert.
Sumatra is home to some of the country's largest oil fields, as well as its oldest and smallest liquefied natural gas terminal, although there are no reports of damage to those facilities.
Padang, the capital of Indonesia's West Sumatra province, sits on one of the world's most active fault lines where the Indo-Australia plate grinds against the Eurasia plate to create regular tremors and sometimes quakes.
A 9.15 magnitude quake, with its epicentre roughly 600km northwest of Padang, caused the 2004 tsunami that killed 232,000 people in Indonesia's Aceh province, Thailand, Sri Lanka, India, and other countries across the Indian Ocean.
The depth of today's earthquake was 85km, the US Geological Survey said. It revised down the magnitude of the quake from 7.9 to 7.6.
