A South Korean man tending a family grave is suspected of sparking one of the ‘unprecedented’ wildfires that ravaged the southeastern part of the country last week, the National Police Agency said Monday.

Wildfires Burn Across South Korea’s Southeast. Wildfires Wildfires, Air Quality and Smoke Forecasts: See Videos. Wildfires Burn Across South Korea’s Southeas

More than 100 helicopters and 9,000 personnel have been deployed to battle the fires in Sancheong and elsewhere in southern South Korea.