TANAH DATAR: Flash floods and mud slides in Indonesia’s West Sumatra province killed at least 43 people over the weekend while a search for 15 missing people continued, authorities said on Monday.
Torrential rain on Saturday evening triggered flash floods, landslides, and cold lava flow — a mud-like mixture of volcanic ash, rock debris and water — in three districts in West Sumatra province, Abdul Malik, chief of the provincial rescue team, said.
The cold lava flow, known in Indonesia as a lahar, came from Mount Marapi, one of Sumatra’s most active volcanoes.
In December, more than 20 people were killed after Marapi erupted. A series of eruptions has followed since.
“The heavy rain swept materials such as ash and large rocks from the Marapi volcano,” said Abdul Malik, who later added in a statement that 43 people had died and 15 remained missing.
“Cold lava flow and flash floods have always been threats to us recently. But the problem is, it always happens late at night until dawn,” he said.
Abdul said around 400 personnel, including rescuers, police, and military, were deployed to search for the missing people on Monday, helped by at least eight excavators and drones.
The national disaster and management agency BNPB said in a statement almost 200 houses were damaged and 72 hectares (178 acres) of lands, including rice fields, were affected. At least 159 people from Agam district were evacuated to nearby schools.
Footage shared by BNPB showed roads and rice fields covered by mud. Video also showed the wreckage of damaged homes and buildings, while the floods brought logs and large rocks into settlements.
Eko Widodo, a 43-year-old survivor, said: “The flooding was sudden and the river became blocked which resulted in the flow of water everywhere and it was out of control.”

Tbilisi: Some 1,000 protesters stood firm outside parliament in Georgia on Monday, vowing not to back down in their fight against a Russia-styled “foreign agent” bill, a day before it’s due to be adopted.
Protests have gripped the small Caucasus nation for weeks over the bill, which critics say will erode democracy and derail the ex-Soviet republic’s long-held ambition of joining the European Union.
Critics say the measure, which resembles one Russia has used to crack down on dissent, will steer Tbilisi back under Moscow’s influence.
The ruling Georgian Dream party has portrayed it as necessary for Georgia’s sovereignty, saying it will boost transparency of civil groups’ funding.
The bill is due to go for a third and final reading in parliament on Tuesday.
On Monday, it passed a committee vote, a final step before it goes for a vote in parliament.
The bill targets NGOs that receive foreign funding, with Georgian Dream’s billionaire backer Bidzina Ivanishvili accusing them of working on foreign orders and plotting a revolution.
Part of Tbilisi’s main Rustaveli Avenue was closed off around parliament on Monday.
Hundreds of riot police officers lined a street behind parliament, and some scuffles broke out between them and protesters.
Authorities a day earlier warned that they would arrest people who blocked parliament, but thousands defied the warning and came to the parliament’s gates anyway.
“We are planning to stay here for as long as it takes,” 22-year-old Mariam Kalandadze told AFP.
“This law means not joining Europe,” she said, adding that “this is something that I have wanted my whole life.”