HONG KONG, March 25 (Xinhua) -- At least 18 people were injured Saturday afternoon when an escalator at a shopping mall in China's Hong Kong suddenly reversed direction and sped up.
Video footage shot by witnesses showed that an up-going escalator suddenly reversed and went downward at an obviously higher speed, leading dozens of passengers to lose balance and roll down to the ground.
Local radio RTHK quoted an injured passenger as saying that the escalator was going "twice as fast."
Several ambulances rushed to the scene and took the injured to nearby hospitals.
A man who suffered head injury was in serious condition, according to police.
RTHK quoted an expert in escalator maintenance of Hong Kong's Vocational Training Center as saying that this kind of accidents rarely happen in Hong Kong and may be attributed to the malfunction of the escalator's anti-reversal gear and auxiliary safety gear.
A spokeswoman of the shopping mall in Mong Kok and a director of the mall's property management company said the escalator has been in service for years with a fine record of operation.
It passed a recent inspection on March 23, showing no signs of mechanical defects or falling short of safety standard.
The contractor for maintaining the escalator has been asked to investigate the cause of the accident.