Dozens of people are thought to be trapped under the rubble of buildings in the Indonesian city of Palu following an earthquake and tsunami.
Rescuers are awaiting heavy machinery to search the ruins of a hotel and a shopping centre as aftershocks made it unsafe for them to go in.
They have been getting water and food to some of those trapped, who have been screaming for help to get out.
The quake and tsunami killed at least 832 people, officials say.
The national disaster agency has announced plans for mass graves and one that was being dug on Sunday night is expected to hold at least 300 bodies.
Indonesian President Joko Widodo visited the region to urge a “day and night” effort to rescue survivors.
Survivors of the disaster have been sleeping in the open, wary of returning to their homes, even if they are still intact.
With hospitals damaged, injured people have been treated in the open and at least one military field hospital has been set up.
The military has taken over the airport to fly aid in, and injured people and other evacuees out.
“What you’ll see, you know, as the days go by and people don’t have access to adequate hygiene supplies, shelter, you’ll see the situation deteriorate if they don’t get that access so, we’ve sent shelter kits,” Tom Howells, programme director for Save The Children, said on Sunday.
The 7.5 magnitude quake occurred at a depth of 10km (6.2 miles) just off the central island of Sulawesi at 18:03 (10:03 GMT) on Friday, setting off a tsunami, US monitors say.
Many people were on the beach in Palu, preparing for a festival, and were caught when the waves swept in.
The earthquake was powerful but shallow and with more lateral than vertical movement, not typically the kind of tremor that sets off tsunamis.
Vice-President Jusuf Kalla has said the final death toll could be in the thousands while the Red Cross estimates that more than 1.6 million people have been affected.
Source-BBC
