Torrential rains have triggered flash floods and a landslide on Indonesia’s Sumatra island, killing at least 10 people and leaving 10 others missing, officials said Saturday.

Tons of mud, rocks and uprooted trees rolled down a mountain late Friday, reaching a river that burst its banks and tore through mountainside villages in Pesisir Selatan district of West Sumatra province, said Doni Yusrizal, who heads the local disaster management agency.

Rescuers pulled out seven bodies in the worst-hit village of Koto XI Tarusan, and recovered two others in two neighboring villages, said National Disaster Management Agency’s spokesperson Yusrizal. Ten are still missing.

He said that 46,000 people had fled to a temporary government shelter after the flood and landslide buried 14 houses while 20,000 houses were flooded up to the roof.

“Relief efforts for the dead and missing were hampered by power outages, blocked roads covered in thick mud and debris,” Yusrizal said.

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

This isn’t the first time in recent years that landslides and flash floods have plagued Indonesia.

In 2023, a landslide caused by torrential rain killed at least 11 people and left dozens of others missing on an island in Indonesia’s remote Natuna regency, disaster officials said. Tons of mud fell from surrounding hills onto houses in Serasan village in Natuna. Rescuers recovered at least 11 bodies and authorities fear that the death toll will rise, National Disaster Mitigation Agency spokesperson Abdul Muhari said.