A 19-year-old mentally disabled man jumped onto an MTR track and sat on a wall opposite a platform at Ngau Tau Kok station yesterday morning.
Barefoot, Wong Ho-keung jumped onto the track leading to Tiu Keng Leng at about 9.30am, walked across it and climbed onto the wall along the track.
An MTR spokesman said a staff member on the platform pressed an emergency button after spotting the man.
'A train was approaching the station when it happened, and the train driver also saw the passenger and so he stopped the train,' the spokesman said.
'After the train stopped, our platform staff then went down to the track and led the passenger back to the platform, from where he was taken to hospital by ambulance.'
The trespasser was not injured, but was admitted to United Christian Hospital for a check-up. He was later discharged.
A witness, Chan Hei-ting, a student at Shue Yan University, said many passengers on the train were worried about the man's safety.