PALU, Indonesia (AP) — A mass burial was being prepared for more than 300 bodies in an Indonesian city hit hard by a powerful earthquake and tsunami.

The toll of more than 800 dead from Friday's disaster is mostly from Palu and is expected to grow as areas cut off by damage are reached.

National disaster agency chief Willem Rampangilei said the grave can be enlarged if needed and burials must be done soon for health and religious reasons. A majority of Indonesians are Muslim, and burials customarily take place within one day.

There was a desperate need for heavy equipment to reach possible survivors in collapsed buildings, including an eight-story hotel in Palu where voices were heard in the rubble. A survivor was found Sunday evening in the ruins of the Roa-Roa Hotel.