A wall of water from a burst dam killed 52 people on the outskirts of the Indonesian capital Jakarta on Friday, crashing into hundreds of homes while many residents slept, officials said.
While are common during the rainy season in Indonesia, the latest disaster was probably caused by and poor maintenance, some officials said, reflecting years of under-investment in much of the country's crucial infrastructure.
The dam, which retained water in Lake Situ Gintung in Tangerang District, 20 km (12 miles) southwest of Jakarta, dated from the 1930s in the Dutch colonial era, according to local media reports.
Lukman Farid, a resident, told Reuters Television the water rushed past his house around dawn.
"I was in front of my door and I saw my neighbor tried to drive his car. But the water was turbulent, fast, and in seconds it was already high. The water was about 2.5 meters at the time."
"Hundreds of houses are flooded, tens of houses damaged, it was like a small tsunami," he said.
Rescuers retrieved the dead and injured using inflatable boats or waded through floodwater that in some areas came up to their chests.
Vice President Jusuf Kalla went to the area earlier on Friday and promised the government would repair the dam immediately and provide help with rebuilding homes.
(Additional reporting by Dicky Kristanto, Johan Purnomo and Adi Kurniawan; Editing by Sara Webb and Dean Yates)