The Government has deployed excavators and tracking dogs to assist the search, he added.
The national weather service had warned earlier this week of extreme conditions that could cause hydrometeorological disasters, with heavy rainfall expected across several regions in Indonesia in the coming weeks.
The annual monsoon season, typically between November and April, often brings landslides, flash floods and water-borne diseases.
Climate change has impacted storm patterns, including the duration and intensity of the season, resulting in heavier rainfall, flash flooding and stronger wind gusts.
Earlier in November, flash floods and landslides in a remote area of Papua killed at least 15 people.
– Agence France-Presse