11.35凶手叫学生报警、警方11.40接到电话11.35am - Towards the end of lunch break, a group of students encounters a Sec 4 student outside a toilet. He is holding an axe and asks them to call the police. The students return to their classroom and inform their teacher. - A teacher arrives at the scene and tells the student to put down the axe. He complies and is escorted away to a meeting room. Other teachers call the police and check the toilet. 注意最后一句，报警的同时老师已经去厕所查看。 警方的说法是干案时间是从11.16到11.44，那么11.50就宣告死亡是不是太快了一点。网上有些说法未经证实但感觉是有可能的。