According to local media, the Indonesian government has announced that residents can buy food from markets and the state would cover the expenses.

Indonesian's president on Sunday called on people to pray for victims of the earthquake and tsunami on the island of Sulawesi.

Joko Widodo and several thousand people attended a mass prayer really in Surakarta, Central Java for victims of Friday's natural disasters, Indonesia's national news agency Antara reported.

The tsunami, towering up to three meters high, hit Palu, capital of the Central Sulawesi province, and the northeast of the nearby Donggala Regency. 

Earlier, Sutopo Purwo Nugroho, the spokesman for the national disaster management agency, told reporters that 821 deaths were confirmed in Palu, while 11 victims are from the city of Donggala.

Rescuers were struggling in their efforts as many of the roads leading to Palu are damaged, Willem Rampangilei, head of the agency, was quoted by the country's national newspaper Kompas as saying on Saturday.

Many cell phone towers were downed, crippling the local tele communications infrastructure.

After its 500-meter airstrip was damaged, Palu’s airport was closed to most flights.

The airport is open for humanitarian and military purposes using Hercules aircraft and helicopters. 

There are long lines at the airport to ferry reporters to and from affected areas via Indonesian military Hercules aircraft.

Indonesian troops have been deployed to reach the affected area to help survivors.

On Saturday, Indonesia declared a state of emergency for the island.

Over the last two months, three more earthquakes with magnitudes 6.3, 6.9, and 7 hit the eastern island of Lombok, killing a total of 563 people.

Indonesia lies within the Pacific Ocean’s "Ring of Fire" where tectonic plates collide and cause frequent seismic and volcanic activity.

On Dec. 26, 2004, a magnitude 9.1 earthquake struck the eastern coast of Sumatra, triggering a tsunami that killed around 230,000 people as it tore along the coasts of Sri Lanka, India, Malaysia, Indonesia, and Thailand.