A security guard who stabbed his girlfriend to death after she showed an interest in a male colleague was yesterday convicted of murder.
The Court of First Instance's Mr Justice Alan Wright handed Poon Man-sum, 32, a life sentence for killing Law Yuk-yu, 24, on November 28, 2012. Poon was also found guilty of the attempted murder of Law's colleague and love interest Chan Tai-wai, 20, a day after he killed Law.
"It is obvious you had the intention to kill," Wright said, adding that Poon could simply have stepped out of the relationship.
The jury of four women and three men took more than seven hours to reach their guilty verdict, six to one.
The court heard that Poon, Law and Chan were colleagues, working in security at Coastal Skyline, a private housing estate in Tung Chung. At the time, Poon and Law had been in a relationship for 11 months. But when Poon found out that Law was fond of Chan, the couple's relationship soured.
Poon said in his evidence statement that he went to Law's flat in Tai Po to ask for a reconciliation on November 28, 2012. He said he was sad about the break-up and wanted to commit suicide in front of Law, but she found him childish and told him not to do so in her home.
Poon said he was infuriated as he could not understand how Law could be so ruthless towards him. A struggle ensued, and Law accidentally fell on his knife, he claimed. He then stabbed her a few more times as she had grabbed his genitals, causing him great pain, he said.
Poon said he did not call for an ambulance after Law stopped struggling as he thought she had died. He then stayed with her lifeless body overnight.
The next day, Poon brought a knife to work and attacked Chan when they met in the changing room, before being subdued by their colleagues.
Poon said he had wanted to kill Chan, his love rival, before committing suicide.
Chan suffered injuries to his head and neck from the assault, but has since recovered.