At least 22 people have died and 14 more are missing after heavy rain caused flooding and landslides in South Korea, officials said Saturday, with thousands more ordered to evacuate their homes.

South Korea is at the peak of its summer monsoon season and there has been heavy rainfall for the last three days, triggering widespread flooding and landslides, and causing a major dam to overflow.

The interior ministry reported that 22 people had been killed and another 14 were missing in the heavy downpours, mostly buried by landslides or after falling into a flooded reservoir.