The first derailment in MTR history (excluding ex-KCR lines) took place at Kowloon Bay station in 1994. The seventh carriage of a train pulling into the station at about 60 km/h jumped the tracks on 28 January 1994, on a section of track adjacent to the MTR headquarters building. Nobody was injured, though train services were disrupted. The incident was blamed on a bolt in the train's suspension system which had worked itself loose, causing the weight load to be concentrated on the rear wheels of the carriage.