What was behind Hong Kong train door mishap? Prominent engineer questions official line, while transport group urges MTR to investigate

A veteran engineer dubbed “Hong Kong’s Detective Galileo” has questioned the MTR Corporation’s explanation that a loose billboard component was responsible for a rare accident in which a pair of carriage doors fell off a moving train as it pulled into a busy station on Thursday.

Lo Kok-keung, 71, a mechanical engineer nicknamed after the science-loving sleuth at the centre of a series of Japanese mystery novels, has served as an expert witness in dozens of court cases since the 2000s, and told the Post on Friday that it was improbable that a blow from a loose billboard would generate enough force to knock a set of doors off of a train if they were in good working order.