The confirmed death toll from the earthquake and tsunami that struck the Indonesian island of Sulawesi has risen to 832, and the vice-president, Jusuf Kalla, has warned it could reach into the thousands.

More than 150 aftershocks followed the 7.4 magnitude earthquake and subsequent tsunami which hit Sulawesi on Friday, causing thousands of homes, hotels, shopping malls and several mosques to collapse.

So far, 821 of the deaths were in the city of Palu, with 11 casualties recorded in Donggala, the worst-hit area which is home to 300,000 people. Hundreds of bodies have been found on beaches and authorities fear many may have been washed out to sea.