Dozens killed in cold lava mudslides on Indonesian island of Sumatra

Nearly 20 missing after monsoon rains trigger flash floods, sending torrents of volcanic material and mud down slopes of Mount Merapi volcano

Heavy rains triggered flash floods and caused torrents of cold lava and mud to flow down a volcano's slopes on Indonesia's Sumatra island, killing at least 37 people and leaving more than a dozen others missing, officials have said.

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 on Sunday.