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At a Glance Nearly 2,000 people are confirmed dead on the Indonesian island of Sulawesi after a 7.5 magnitude earthquake.

More than 5,000 people are still missing.

The quake also triggered a tsunami, according to Indonesia's geophysics agency.

Indonesian officials announced the death toll nearly reached 2,000 from a devastating earthquake and tsunami on the island of Sulawesi and warns that thousands more are believed to still be unaccounted for.

The official toll hit 1,948, mostly in the hard-hit city of Palu, said Jamaluddin, an official from the disaster task force who uses one name. He corrected the number during a news conference in Jakarta after initially saying it was 1,944. He said a navy ship had docked in the area and opened a field hospital.

On Sunday, Indonesia's disaster agency said more than 5,000 people are still missing.

A spokesman for the disaster agency, Sutopo Purwo Nugroho, said rescue workers will stop searching for bodies on Thursday, Reuters reports.

The toll could continue to rise as rescue officials reach several large coastal towns that were isolated because of damaged roads and downed communication lines.

A mass burial for more than 500 bodies was held on Sept. 30 for health and religious reasons; the majority of Palu's inhabitants are Muslim.

Late Monday night, there was some good news: crews were able to rescue a 38-year-old man trapped for three days under the rubble of a collapsed building in Palu. The survivor, identified as Sapri Nusin, was conscious as he was seen on Indonesian TV being rescued.

(PHOTOS: Images of the Disaster in Indonesia )

Hundreds are still waiting to be evacuated from Palu as concerns about food and fuel shortages mount.

"We feel like we are stepchildren here because all the help is going to Palu," said Mohamad Taufik, 38, from the town of Donggala, who said five of his relatives are still missing. "There are many young children here who are hungry and sick, but there is no milk or medicine."

Along the coast, the tsunami, which reportedly reached as high as 6 meters (nearly 20 feet) in some places, shattered buildings, uprooted concrete and thrust houses and boats tens of meters inland.

Nugroho said more people remain trapped in Sigi and Balaroa, meaning the toll is likely to rise. More aid was being distributed, he added, but "we still need more time to take care of all the problems."

He said 153 bodies were buried Monday in a mass grave and that the operation continued Tuesday.

<img class="styles__noscript__2rw2y" src="https://dsx.weather.com/util/image/w/ap18273468016842.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0" srcset="https://dsx.weather.com/util/image/w/ap18273468016842.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 400w, https://dsx.weather.com/util/image/w/ap18273468016842.jpg?v=ap&w=980&h=551&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 800w" > Rescuers try to pull 15-year old earthquake victim Nurul Istikharah from her damaged house on Sunday, Sept. 30, 2018, after the earthquake and tsunami in Palu, Central Sulawesi, Indonesia. (AP Photo/Arimacs Wilander) (AP Photo/Arimacs Wilander)

A special aircraft carrying more than 3,000 gallons of fuel had arrived and trucks with food were on the way with police escorts to guard against looters. Nugroho said many gas stations were inoperable either because of quake damage or from people stealing fuel.

The frustration of waiting for days without help boiled over for some.

"Pay attention to Donggala, Mr. Jokowi. Pay attention to Donggala," yelled one resident in a video broadcast on local television, referring to Indonesian President Joko "Jokowi" Widodo. "There are still a lot of unattended villages here."

The town's administrative head, Kasman Lassa, all but gave residents permission to take food — but nothing else — from shops.

"Everyone is hungry and they want to eat after several days of not eating," Lassa said on local TV. "We have anticipated it by providing food, rice, but it was not enough. There are many people here. So, on this issue, we cannot pressure them to hold much longer."

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Desperation was visible in Palu as well. Signs propped along roads read "We Need Food" and "We Need Support," while children begged for cash in the streets and long lines of cars snarled traffic as people waited for gas.

Teams were searching for trapped survivors under destroyed homes and buildings, including a collapsed eight-story hotel in Palu, but they needed more heavy equipment to clear the rubble. Nearly 62,000 people have been displaced from their homes, Nugroho said.

Many people were believed trapped under shattered houses in the Palu neighborhood of Balaroa, where the earthquake caused the ground to heave up and down violently.

"I and about 50 other people in Balaroa were able to save ourselves by riding on a mound of soil which was getting higher and higher," resident Siti Hajat told MetroTV, adding that her house was destroyed.

In Palu's Petobo neighborhood, the quake caused loose, wet soil to liquefy, creating a thick, heavy quicksand-type material that resulted in massive damage. Hundreds of victims are still believed to be buried in the mud there.

Liquefaction of soil can be compared to walking on a sandy beach.

"If you walk across some wet sand a little back from the water's edge, it is usually firm walking, even though you might leave footprints," said Adam Switzer, an expert at the Earth Observatory of Singapore. "However, if you stand still and wiggle your toes and feet, you will probably sink a little as the sand around your feet becomes soft and unstable. This is similar to what happens during liquefaction."

Nugroho said generators, heavy equipment and tents are among the most-needed aid items. The countries that offered assistance include the United States and China, he said.

Australian Prime Minister Scott Morrison said Tuesday that his government has given $360,000 to help victims and is in talks with Indonesian authorities about a second round of aid. The initial funds are to go to the Indonesian Red Cross for the most obvious emergency aid needs, such as tarpaulins.

Nugroho said only two of the 122 foreigners in the area remained unaccounted for — one from South Korea and the other from Belgium.

The coastline at Palu was strewn with rubble and a few brightly colored cargo containers poking out of the water. Buildings near the water were ruined shells. The arches of a large yellow bridge rested in the water and eerie drone video showed a Ferris wheel, untouched, on a beach scraped bare by the waves.

In Petobo, Edi Setiawan said he and his neighbors rescued children and adults, including a pregnant woman. His sister and father, however, did not survive.

"My sister was found embracing her father," he said. "My mother was able to survive after struggling against the mud and being rescued by villagers."

Indonesia is frequently struck by earthquakes, volcanic eruptions and tsunamis because of its location on the "Ring of Fire," an arc of volcanoes and fault lines in the Pacific Basin. A powerful quake on the island of Lombok killed 505 people in August, and two moderate quakes near an eastern island on Tuesday reportedly damaged a bridge.

The vast archipelago is home to 260 million people on more than 17,000 islands that stretch a distance similar to that between New York and London. Roads and infrastructure are poor in many areas, making access difficult in the best of conditions.