Flash floods and cold lava flow hit Indonesia's Sumatra island. At least 37 people were killed

Heavy rains and torrents of cold lava and mud flowing down a volcano's slopes on Indonesia’s Sumatra island triggered flash floods that killed at least 37 people and more than a dozen others were missing, officials said Sunday.

Heavy rains and torrents of cold lava and mud flowing down a volcano's slopes on Indonesia’s Sumatra island triggered flash floods that killed at least 37 people and more than a dozen others were missing, officials said Sunday

Monsoon rains and a major mudslide from a cold lava flow on Mount Marapi caused a river to breach its banks and tear through mountainside villages in four districts in West Sumatra province just before midnight on Saturday. The floods swept away people and submerged more than 100 houses and buildings, National Disaster Management Agency spokesperson Abdul Muhari said.

Cold lava, also known as lahar, is a mixture of volcanic material and pebbles that flow down a volcano’s slopes in the rain.

By Sunday afternoon, rescuers had pulled out 19 bodies in the worst-hit village of Canduang in Agam district and recovered nine other bodies in the neighboring district of Tanah Datar, the Indonesian National Search and Rescue Agency said in a statement.

The agency said that eight bodies were pulled from mud during deadly flash floods that also hit Padang Pariaman, and one body was found in the city of Padang Panjang. It said rescuers are searching for 18 people who are reportedly missing.

Flash floods on Saturday night also caused main roads around the Anai Valley Waterfall area in Tanah Datar district to be blocked by mud, cutting off access to other cities, Padang Panjang Police Chief Kartyana Putra said Sunday.

Videos released by the National Search and Rescue Agency showed roads that were transformed into murky brown rivers.