Rescuers working to reach vehicles trapped in a flooded tunnel near the South Korean city of Cheongiu have recovered nine bodies, reports BBC.
Local administration said flood water caused by days of torrential rain poured into the underpass so quickly that passengers and drivers were trapped in their cars, unable to escape.
At least 37 people have died in total after flooding, landslides and power cuts across much of the country. Nine people are still missing.
It is unclear how many people are still trapped in the 685-metre (2,247ft) long tunnel in the town of Osong, but 15 vehicles are thought to be submerged.
Several of the bodies were recovered from inside a bus. Nine survivors were rescued on Saturday.
The victims' families say the deaths might have been prevented had the local authorities responded effectively.
Almost 300mm of rain is reported to have fallen across South Korea on Saturday.
Bd-pratidin English/Golam Rosul