A superintendent sprinted past his colleagues to win a race during training then collapsed and died, an inquest heard yesterday. Wong Wing-kei, 39, famed for arresting the Tuen Mun rapist, Lam Kwok-wai, in 1994, died of a heart attack because of the 'strenuous exercise', Coroner Paul Kelly heard. The postmortem examination showed Wong's heart had been deprived of blood due to blocked arteries. Forensic pathologist Dr Bobby Shum Shui-fung said the medical cause of death was coronary insufficiency. Wong joined the force in 1980 and was promoted to superintendent in the Police Tactical Unit in February. On February 21 Wong was asked to run 12 laps in a certain time while carrying various items, the court heard. Inspector Lam Wing-chau, who was holding a mattress with Wong and another officer during the exercise, said Wong told them to pick up speed in the last 100 metres to the finishing line. The inspector told the court Wong wanted to overtake another team. 'At that time, I felt very tired but I sprinted to the finishing line,' the officer said. 'After reaching the line, [Wong] squatted down and told me to hold the mattress and they're the last words he said.' The inspector said he saw Wong's face turn purple and then black while he struggled to breathe. Wong was immediately attended by the physical training instructors at the unit and an attempt was made to resuscitate him. After a short while an ambulance arrived and Wong was taken to Fanling Hospital and there certified dead. His team members told the court Wong looked relaxed and energetic during the physical activities. He had passed a medical test prior to joining the unit. After Wong's death, the unit's management completed a review of physical training and medical screening for its officers and there were about 20 recommendations, the court heard. Deputy commandant of the unit, Senior Superintendent Blake Hancock, said some of the recommendations had been implemented. He said some were under consideration by two health consultants, and a working group was going to be formed in eight months to consider them further. The case continues today.