Heavy rains triggered flash floods and landslides on the Indonesian island of Sumatra, leaving at least 19 people dead and seven missing, officials said on Sunday.

Doni Yusrizal, the head of the local disaster management agency, said tons of mud, rocks and uprooted trees rolled down the mountain and reached a river late Friday, causing its banks to burst. It swept away mountainside villages in the South Persisir district of West Sumatra province.

Yusrizal said rescuers recovered seven bodies on Saturday from the worst-hit village of XI Tarusan in Kodong, and found three more bodies in two neighboring villages.

The National Disaster Management Authority said on Sunday that rescuers recovered six bodies in South Siradan and three in neighboring Padang Pariaman district, bringing the death toll to 19.

At least two villagers were injured in flash floods and rescuers were searching for seven people who were still reported missing, the agency said in a statement.

According to the report, floods and landslides buried 14 houses, more than 80,000 people fled to government temporary shelters, and 20,000 houses in nine districts and cities in West Sumatra were flooded to their roofs.

“Rescue efforts for the dead and missing people have been hampered by power outages and blocked roads covered with thick mud and rubble,” Yusrizal said.

Heavy rains cause frequent landslides and flash floods in Indonesia, where millions of people live in mountains or near floodplains.