Indonesia's disaster agency, while telling on Sunday that death toll from last week's quake and tsunami has more than doubled to 832, said regencies of Donggala, Sigi and Parigi Moutong - with a combined population of 1.2 million - had yet to be fully assessed.
Reports are still coming in of the impact of the disaster on communities further up the coast from Palu and closer to the quake's epicentre, including the smaller town of Donggala, where there was at least one death and 10 people were injured.
The first quake tremors were felt on Friday in Palu.
VOA's former bureau chief in Jakarta Frans Padak Demon, who was in Palu when the tsunami hit, estimates that there were as many as "thousands of people in Talise Beach" around 5pm on Friday for an event commemorating the anniversary of the city of Palu.
More than 14,000 people were displaced from their homes and were being housed in emergency tents, Nugroho said. Majority had been accounted for, but one South Korean was believed to be trapped in the ruins of the Roa-Roa Hotel, while three others from France and one from Malaysia were missing.
Hungry survivors have been looting unstable shopping centers for food, clothing and water.
Earlier this year, a series of powerful quakes hit Lombok, killing more than 550 people on the holiday island and neighbouring Sumbawa.
Hundreds of people had gathered for a festival on Palu's beach when the water smashed onshore at dusk.
People loot a convenience store in Palu, in Central Sulawesi, on September 30, 2018, after a strong quake triggered a tsunami that struck the area.
"There are many challenges", Jokowi said. More than 350 people have been declared injured.
Some government planes carrying relief supplies managed to land at the main airport in Palu, although officials said it would likely remain closed to commercial flights for days.
Rescue teams are are working hard to help people affected by the natural disaster and tsunami.
A tsunami is a huge wave triggered by an quake. In a statement, the IHH said that they have sent a five-person team to help people in need in the region.
"Ponulele Bridge between West Donggala and East Donggala subdistricts was swept away by the tsunami".
Most people slept outdoors, fearing strong aftershocks.
The Ministry of Transportation confirmed that Taipa Port and the Mamboro Bus Terminal in Palu were also badly damaged.
He is looking for one small body among dozens of corpses lying in an open courtyard at the back of the medical centre, baking under the fierce tropical sun in Palu, Indonesia.
Rescue teams were still guessing at the scale of destruction outside the Sulawesi capital Palu, especially in nearby Donggala, a city of 300,000, and other areas of the Indonesian island.
Indonesia is one of the most disaster-prone nations on earth.
The post said the embassy in Jakarta and the office of the honorary consul-general in Denpasar, Bali, were working with the Thai conglomerate, Charoen Pokbhand Indonesia, to assess the situation and the possibility of evacuating Thais out of the areas hit by the quake and the tsunami.
The initial quake struck as evening prayers were about to begin in the world's biggest Muslim majority country on the holiest day of the week.
Indonesia lies within the Pacific Ocean's "Ring of Fire" where tectonic plates collide and cause frequent seismic and volcanic activity.