Torrential rain warnings remain in effect for most of the country’s western and southern regions and the weather service has advised extreme caution against landslides and flooding through Saturday.

Some parts in the south including the city of Gwangju were hit by record precipitation of more than 400 millimetres (16 inches) in the past 24 hours as of early on Friday, the safety ministry said.

Four people have died and one remained missing, it said. Two were trapped in cars on flooded roads and another died in a basement under flood water in the central South Chungcheong province, it said.

A driver was also killed after a 10-metre-high (33 ft) roadside wall collapsed on top of a moving vehicle on Wednesday in Osan, some 44 kilometres (27 miles) south of Seoul, fire agency officials said.

South Korean President Lee Jae Myung, who has been vocal about stepping up the government’s role in disaster prevention and response, is scheduled to hold an emergency meeting on the weather on Friday.