5 people were killed and about a dozen injured when fire swept through a South Korean city on Tuesday night, according to local officials. The blaze started at a construction site located in the heart of the country's second-largest metropolitan area. Officials said they believed it began with sparks from welding equipment hitting nearby wooden pallets. In addition to the deaths, 12 people were injured and more than 100 homes and businesses damaged by the fire, which burned for about three hours before being put out by firefighters, according to Yonhap News Agency. The fire also led to major traffic jams as it forced the closure of a highway that runs through the city and connects the capital Seoul with the southeastern port of Busan.

5 people were killed and about a dozen injured when fire swept through a South Korean city on Tuesday night, according to local officials. The blaze started at a construction site located in the heart of the country's second-largest metropolitan area. Officials said they believed it began with sparks from welding equipment hitting nearby wooden pallets. In addition to the deaths, 12 people were injured and more than 100 homes and businesses damaged by the fire, which burned for about three hours before being put out by firefighters, according to Yonhap News Agency. The fire also led to major traffic jams as it forced the closure of a highway that runs through the city and connects the capital Seoul with the southeastern port of Busan.