asked for help from Sim, with whom she bore two sons, to help her in the murder. While he was conducting an autopsy on her, Professor Chao found two knife wounds on Ayako Watanabe's neck, and one to her abdomen, along with a few others. Chao also made a certified finding that the woman died around 5 to 6 minutes after the fatal wounds were inflicted on her. At the trial, both Wong and Sim (who initially admitted to his participation in the killing) pointed fingers at one another, with Wong even putting up a defence of diminished responsibility, with her psychiatrist Dr. Wong Yip Chong claiming that she caught the Japanese encephalitis virus from Hiroshi Watanabe and thus suffered from a viral brain infection at the time of the killing. However, she was found to be not suffering from any diminished responsibility by the prosecution's psychiatric expert. After a trial lasting 26 days, on 7 December 1970, both Mimi Wong and Sim Woh Kum were found guilty of murder and condemned to hang for murdering Ayako Watanabe. Their subsequent appeals against the sentence and pleas for presidential clemency were later rejected. On the morning of 27 July 1973, the couple were executed in Changi Prison. Mimi Wong was the first woman to be sentenced to death for murder in Singapore. 1972 Pulau Ubin Murder On the night of 22 April 1972 at Pulau Ubin, 25-year-old Harun bin Ripin (also named Harun bin Ariffin in some newspaper reports) and 19-year-old Mohamed Yasin bin Hussin barged into the home of 58-year-old Poon Sai Imm and robbed her. During the robbery, when Harun went around the house to look for valuables to steal, Yasin was restraining the victim and Poon died during the struggle. The two men proceeded to dispose the body into the sea before returning to the mainland, but the body was unexpectedly fished out from the sea by a fisherman the following morning. 9 months later, when he was arrested for another crime, Harun surprised his interrogators by confessing to them about his involvement in the robbery. This confession led to Yasin's arrest, and the two men were charged with the murder of Poon Sai Imm. Professor Chao found that there were nine fractures found on Poon's ribs, which were caused by Yasin while he was restraining and sitting on top of her, which led to her heart stop