Plotting of wife's murder The debt-ridden Ler knew that given his precarious financial situation he would be unlikely to gain custody of his daughter, believing he did not have the ability to raise her well due to the substantial debts incurred from his failed businesses; another factor was the pending sale of their flat. Ler began to contemplate murdering his wife to gain custody of their daughter and the full ownership of his flat, intending that his debts would ultimately be paid off from the proceeds promised by the sale of the flat.
First move and recruitment Anthony Ler began in February 2001 by befriending a group of five teenage boys who had gathered outside a
McDonald's restaurant in
Pasir Ris. Ler acted as a mentor to them, and went on meeting them a few times. After they first met, Ler asked the boys if they dared to kill people and when one of them asked how much he was willing to pay, Ler asked them to name their price. One of the boys, a 15-year-old
secondary school student whom Ler had known for five years, replied
S$1 million; another boy, a 16-year-old school drop-out named Gavin Ng Jin Wei (), said S$100,000; a third boy named Seah Tze Howe () said S$100; the others gave unknown prices. Ler agreed to Gavin's price, and asked them to name a target. That was when Ler expressed that his target would be his wife, whom he said he hated for not allowing him to visit his daughter frequently and everything else. He said he would pay that amount to any boy who dared to do it. All the boys perceived it as a joke. Another youth, 22-year-old Seah Tze Howe, was approached by Ler to kill his wife. Like Gavin, Tze Howe also realised that Ler was serious about it when he was invited to Ler's flat one night, where he was offered $100,000 to commit the murder. Ler said he would be selling the flat and use the money from the proceeds to pay him. Tze Howe then suggested Ler to hire a professional killer to carry out the murder. Ler later told him that he could not find anyone to do it. Similarly, the remaining two of the five youths, 19-year-old Kong Ka Cheong () and 17-year-old Vickneswaran Krishnan, felt that Ler was joking and they were disturbed at Ler's constant mentioning of the issue. Vickneswaran, who is also known as Vick to his friends, told the court that, "I found it strange that he should mention the subject of killing his wife every time we met. I thought he was crazy". On the other hand, the 15-year-old, who was described as simple-minded and being gullible by Gavin, agreed with Ler's requests to kill his wife.
Accomplice's reluctance After the second failed attempt, an angry Ler refused to let the boy back out of the plan. It was then, the boy stated, Ler threatened to take his life if he did not help kill Ler's wife. Not only that, Ler even went as far as to make a threat on the lives of the boy's parents and two other siblings. For the next two days, the boy did not go visit Ler because he wanted to celebrate Mother's Day with his mother. On his visit to Anthony Ler's home on 13 May, the boy was given a Japanese samurai sword as a gift from Ler, and the boy liked it. Ler told him he wanted the boy to use the sword to kill Leong. The boy refused to do it and asked to return the weapon to Ler, who in response, told him that he would use the sword to kill him if so. Still not wanting to do the deed, after he went home with the sword, the boy then stayed out for a whole day after going on a fishing session and spent the night in his girlfriend's flat in
Tampines. The boy deliberately avoided phone calls from Ler until much later, when he answered a call and Ler told him to go to
Hougang. The boy then went to Ler's flat with a steak knife given to him by Ler, and his school textbook (to create an excuse that he had been out studying for his undergoing exams). On arrival, they prepared for and practised the killing, with Ler telling the boy specifically where he should stab Annie Leong with the knife. After they left the flat, the final and fatal attempt began.
14 May 2001: Murder of Annie Leong • Annie Leong Wai Mun}} }} Taking with him some papers, Anthony Ler went to visit his wife late at night, at about 11:00 p.m. and asked to meet out in the playground with their daughter. After they met up, Ler asked Leong to sign some papers regarding the unsettled mortgage of their flat, in which they would ask for the mortgage to be settled in monthly installments. Leong agreed to, and asked Ler if he had a pen. Ler said no. Hence, Leong decided to go up to her mother's flat to get a pen, while Ler stayed behind to accompany their four-year-old daughter in the playground. Unknown to Leong, she was lured into a lethal trap set by her own husband. The 15-year-old youth, who was in the ground floor watching the family of three in secrecy, upon seeing Leong about to go up on the lift, made his move as instructed by Ler. He quickly ran up the stairs and reached the fourth floor on time to see Leong stepping out of the lift. From behind, the teenager immediately set upon Leong, covering the screaming woman's mouth with a red cloth on one hand while wielding the knife on the other hand to stab Leong on the neck and chest. After that, the murderer fled the scene, leaving a mortally wounded Leong staggering to the outside of her mother's flat. Leong knocked on her mother's door and said that she had been stabbed before collapsing in front of her horrified mother and brother. At the same time, Ler heard his wife's screams from downstairs and quickly, together with his daughter, got up to his mother-in-law's flat (with the knowledge that the boy had done his job). In front of neighbours and family members, Ler put up a shocked expression, repeatedly telling his wife to not sleep while calling her name. Leong's brother told Ler that the ambulance was arriving and told the family to get some towels to stop the bleeding. They thought she had been stabbed on her chest and neck only; it was only after they cut Leong's clothes away and discovered a stab wound on her back. While the family were busy attending to Leong, the 15-year-old murderer fled to a bus stop, where he hired a taxi and rode it to the beach, and disposed the murder weapon into the sea, as what Ler instructed him to prior to murdering Leong. An ambulance arrived and brought Leong to
Tan Tock Seng Hospital. A few hours later, on the midnight of 15 May 2001, 30-year-old Annie Leong Wai Mun died from her injuries. An autopsy had certified that Leong had died from "acute haemorrhage due to stab wounds of heart and lung". The neck and chest wounds were measured 6 cm and 15 cm long respectively. ==Anthony Ler's arrest==