At least five people died in multiple accidents on a highway in North Gyeongsang Province, South Korea, on Saturday, authorities said. Officials suspect black ice may have caused the crashes.

Two people were killed and four others injured early Monday in a massive chain collision involving 13 vehicles — including a tanker truck, cargo trucks, and passenger cars — in South Korea.

Firefighters using helicopters and soldiers were struggling to contain South Korea's worst-ever wildfires on Thursday that have ravaged the southeastern province of North Gyeongsang, with the death toll from the blazes reaching 27 and another 32 injured.