A local fire station in South Korea said nine people were killed after the five-story building collapsed and crushed a bus.
Apart from the casualties, eight people have sustained serious injuries from the incident.
According to the Gwangju Fire and Safety Headquarters, a bus was stopped on the street on Wednesday afternoon.
Its location was near to the demolition site in Gwangju, located southwest of the capital city.
Aboard the transport vehicle were 17 people. They were stuck under the debris and were covered by a giant dust cloud as the building made its way, as what was shown in dramatic television footage.
A local named Yang Ik-je described the situation as if “the earth was shaking.” Yang operates a business establishment near the demolition site. She hurried outside when she heard the bang.
“I could not see the road clearly, as if it were shrouded in thick fog,” Yang said in an interview with Yonhap news agency. “I checked the CCTV to find out that the building collapsed onto a bus.”
Officials said police are still investigating the reason for the collapse remains unresolved.
Demolition site workers were transferred to a safer location before the incident.
The country has been acting on to boost the safety of its infrastructures after recording mishaps.
South Korea’s worst peacetime catastrophe was recorded in 1995 when a department store collapsed and claimed the lives of more than 500 people. Forty-nine people were also killed following a bridge collapse the year before.