Hendri Dori Satoko, a lawmaker in the Mentawai Islands, told MetroTV: "Our latest data from crisis centre showed that 108 people have been killed and 502 are still missing."

Health Ministry Crisis Centre head Mudjiharto said the Mentawai waves reached up to three metres high and waters swept as far as 600 meters (yards) inland on South Pagai island, the hardest hit.

The centre will help with crisis management in situations such as outbreaks, drought, floods, and natural disasters.