(Bloomberg) -- The death toll from a 7.5 magnitude earthquake and tsunami that hit Indonesia's island of Sulawesi climbed to more than 800, with casualties expected to reach into the thousands as authorities try to reach those trapped under collapsed buildings. Local media reports quoted Vice President Muhammad Jusuf Kalla as saying that he expected the toll to grow as he drew comparisons between the latest quake and a tsunami that hit Indonesia's Aceh province in 2004. Related: San Francisco earthquake could affect 1.1M homes, cause $170B in damage About 844 people are confirmed dead and foreigners from Asia and Europe are among those reported missing, Sutopo Purwo Nugroho, a spokesman at National Disaster Mitigation Agency, said in a televised press conference on Sunday. The central Sulawesi government has declared a state of emergency for 14 days to improve rescue efforts, Nugroho said. At least 209 aftershocks hit the island as of Sunday afternoon. |

Unaware of tsunami threat

The main tremor struck at 6:02 p.m. local time Friday evening (6:02 a.m. EDT) some 35 miles northeast of Donggala, Indonesia – a town of about 300,000 – according to the U.S. Geological Survey and the Associated Press. Shortly after, a tsunami warning was issued by Indonesia's geophysics agency, then lifted. A tsunami reportedly as tall as 20 feet struck Donggala and Palu, the capital of central Sulawesi province, not long after the alert was canceled. Many of the dead were found at beaches near the city of Palu, population 300,000, where a festival was being held. Many people on the beach were killed as they weren't aware of the threat of a tsunami because there is no siren to warn them, Nugroho wrote on his Twitter account. Citizens from France, South Korea and Malaysia are still missing, while foreigners who have been or will be evacuated from the quake-hit areas include those from China, Germany, Singapore, Belgium, Vietnam and Thailand, Nugroho said. |

Ring of Fire

Indonesia's 17,000 islands are prone to earthquakes because the country straddles the Ring of Fire, an arc of fault lines and volcanoes that causes frequent seismic upheavals. At least 160,000 people were killed on Sumatra Island as a result of a 9.1 magnitude earthquake and tsunami on Boxing Day in 2004. More than 100 people were killed after a magnitude 7 earthquake struck a popular tourist island of Lombok in August. Related: Insured losses from May's 'Ring of Fire' near $2.5 billions, says new report A tsunami of as high as three meters hit the coast on Friday after a massive quake that damaged thousands of buildings in Palu and caused a major power failure and cut communication, Nugroho said. Information from the town of Donggala, population 270,000, and two others is limited because of communication problems. State-electricity company PT Perusahaan Listrik Negara is working to restore power in the island to help revive communication, Rudiantara, communication and information minister, said in a televised phone interview with Kompas TV. Electricity is needed to reactivate more than 500 cellular phone towers that are currently offline because of power outage. The ministry has deployed 30 satellite phones to rescue workers and will provide another 100 satellite phones, he said PT Garuda Indonesia canceled at least 18 flights to and from Palu until Oct. 2, the state carrier said in emailed statement on Saturday. The airport has been partially opened for commercial flights on Sunday even as the priority is for emergency and rescue efforts, according to Indonesia's air navigation provider. |

Displaced people being house in emergency tents

More than 400 people were treated at hospitals for injuries. More than 14,000 people were displaced from their homes and are being housed in emergency tents, Nugroho said. There were also reports of the quake impacting towns outside of Palu and Donggala, which could signal more victims from the disaster, he said. One video image showed a wall of water smashing into a row of buildings, while other pictures showed a shopping mall reduced to rubble and a mosque in Palu partially submerged. Evacuation remains a problem and the agency will send heavy equipment by sea to aid rescue efforts, Nugroho said. Australia's Prime Minister Scott Morrison called Indonesia's President Joko Widodo overnight to express his sympathy and pledge his support. "If he needs our help, he'll have it," Morrison said on ABC's Insiders program on Sunday. Related: 6.5 earthquake jolts Indonesia killing at least 100, destroying buildings