A 15-year-old student plunged to his death from the roof of a block of flats in Western yesterday, hours after he was caught cheating during a school test. Yuen Tse-kin, a Form Four student at the St Louis School, was caught cheating by his teacher during a chemistry test at the school in Third Street yesterday morning. He was ordered out of the classroom and the teacher issued him with a warning before allowing the test to continue. Tse-kin attended other lessons after the incident and then left the school for lunch at 12.20pm. He was expected to go home but failed to arrive. At about 1.30pm, Tse-kin was found lying unconscious on the first-floor podium of the 29-storey building at 46 Kennedy Town Praya. He was taken to Queen Mary Hospital where he was declared dead. Police said he fell from the roof of the building and his death was not suspicious. Officers located his 51-year-old mother in a 19th-floor flat while making door-to-door inquiries. She later identified her son. A member of staff from St Louis School said it was the first time Tse-kin had been caught cheating. Democrat Cheung Man-kwong, Legco's education representative, described the incident as tragic and said the teacher concerned was in a difficult position. 'It was natural for the teacher to point out that the student cheated in the test. I don't think he could have predicted such an outcome,' Mr Cheung said. Tang Sau-lan, vice-chairwoman of the Hong Kong Association for School Discipline and Counselling Teachers, said students who cheated should be shown extra care. 'Teachers should try to understand why the student chose to cheat so that they know how to deal with their emotions. Punishment is not the only way,' she said.