The area was hit by two quakes on Friday (Sep 28) evening, with the latter measured at a 7.5 magnitude. Moments later, the city of Palu was slammed by waves from a tsunami, destroying buildings and killing more than 800 people.
"On behalf of the people of Singapore, I extend my heartfelt sympathies to the families affected by the earthquakes and tsunami that struck Central Sulawesi on 28 September 2018," said President Halimah Yacob in her letter to her Indonesian counterpart Joko Widodo.
"Our thoughts are with the people of Indonesia during this difficult period. Singapore stands ready to offer any assistance to the ongoing relief efforts," she added.
Singapore Prime Minister Lee Hsien Loong also wrote that he was "deeply saddened" to hear about the earthquakes and tsunami that struck Donggala and Palu.
"Singapore stands ready to render any assistance to support Indonesia's ongoing relief efforts. I am confident that Indonesia will make a quick and strong recovery from this unfortunate tragedy," he said.
The Singapore embassy in Jakarta had also worked with Indonesian authorities to evacuate a Singaporean who was in Palu, the province's capital, said a statement from the Ministry of Foreign Affairs (MFA).
The MFA said it is monitoring the situation closely.
"As there may be more aftershocks, Singaporeans in Central Sulawesi and surrounding regions should take the necessary safety precautions, monitor the local news for updates, and heed the advice of the local authorities," the statement said.
"Singaporeans should also stay in touch with your family and friends so that they know you are safe."
It said those who require consular assistance should contact the Singapore embassy in Jakarta at +62 811 863 348, or the 24-hour MFA Duty Office.