An escalator ran reversely at a subway station in Bundang, south of Seoul, on Thursday, leaving three people injured seriously, police said.

The accident occurred around 8:20 a.m. when the upwards escalator leading to exit 2 of Sunae Station on the Bundang Line reversed and went downward, according to the police and fire authorities.

Three people were transported to a hospital after sustaining serious injuries on the back and legs. Eleven others were under treatment for minor injuries.

Authorities were looking into the exact cause of the accident.

Source: Yonhap News Agency