Mastermind of conspiracy to cheat victims in rigged mahjong games gets 2 years’ jail, $15k fine

Published Nov 05, 2026, 04:01 PM

Updated Nov 05, 2026, 04:01 PM

Marcus Ang Yi Sheng was sentenced to two years' jail and a fine of $15,000 on Nov 5.

He pleaded guilty to cheating, gambling-related offences, and threatening to throw one of his alleged accomplices from the balcony of her eighth floor condominium.

Ang had worked with eight other people to commit the offences, and he estimated they earned around $100,000 in total.

SINGAPORE- The mastermind of a conspiracy to cheat victims in rigged mahjong games was sentenced to two years’ jail and a fine of $15,000 on Nov 5.

Marcus Ang Yi Sheng, 27, had also carried one of his alleged accomplices to the balcony of her condominium unit on the eighth floor, and threatened to throw her down.

He will have to spend an additional five weeks behind bars should he fail to pay the fine.

Ang worked with eight other people to rig the games , and he estimated they earned around $100,000 in total.

Ang, who is in remand, had pleaded guilty to four counts of engaging in a conspiracy to cheat and one count of attempted conspiracy to cheat.

He also admitted to two gambling-related charges and a criminal intimidation charge.

Another 33 charges were taken into consideration during his sentencing.

One of the accomplices, Chloe Low Zhiyi, 23, who was in a relationship with him , was also convicted on Nov 5. She will be sentenced in December.

Ang devised the conspiracy around April 2024, and created profiles of fictional women on dating platforms.

Posing as a woman, he chatted with prospective dates and invited them to play mahjong.

These prospective dates became victims of the rigged games .

Once a mahjong game was scheduled, Ang would tell one of his female accomplices to pose as the woman in the dating profile.

She would act as the host of the game, which took place at various locations, including SAFRA Toa Payoh.

During the games, Ang got his accomplices to assume fake names. He also asked some of them to pretend they did not know one other in case the victim declined to play.

Ang decided on the rules and rates used to calculate the winnings for each session. On most occasions , he appointed another accomplice to be a reserve player.

This player would observe the victim’s style of play and share the information with his or her accomplices to reduce the victim’s winning chances.

Each accomplice had a specific role.

The first player had to prevent the victim from winning. The second player’s job was to form a winning hand as quickly as possible or help the third player by discarding tiles he or she needed.

The third player had to form the biggest hand possible to maximise how much the victim had to pay.

At least 28 games involving different victims were arranged between April and June 2024.

At least 19 games went ahead.

Ang participated in 12 games, while Low took part in 10.

Separately, he also committed criminal intimidation against one of his alleged accomplices, Belinda Chee Yan Lin, 25, in April 2025.

He had threatened to throw her from her condominium on the eighth floor.

The cases involving Low, Chee and five other people are pending.

In October, an accomplice, Olivia Chin Hui Zhen, 31, was sentenced to eight months’ jail and a fine of $3,000.

On Nov 5, Ang’s lawyer John Koh from Avalon Law Corporation pleaded for his client to be given between 19 and 21 months’ jail, and a fine of $15,000.

He said Ang had not used a weapon against Chee.

Shaffiq Alkhatib is The Straits Times’ court correspondent, covering mainly criminal cases heard at the State Courts.

发布于 2026 年 11 月 5 日下午 4:01

更新于2026年11月5日下午4:01

11月5日，Marcus Ang Yi Sheng被判处两年监禁和15000美元罚款。

他承认犯有欺诈罪、赌博相关罪行，并威胁要将他的一名同伙从她八楼公寓的阳台上扔下去。

Ang 与另外八个人合谋实施了这些犯罪活动，据他估计，他们总共获利约 10 万美元。

新加坡——11月5日，策划在麻将游戏中作弊欺骗受害者的阴谋主谋被判处两年监禁和15000美元罚款。

27 岁的 Marcus Ang Yi Sheng 还把他的一个同伙带到她位于八楼的公寓阳台上，并威胁要把她扔下去。

如果他未能缴纳罚款，他将不得不额外服刑五周。

Ang 与另外八个人合谋操纵比赛，据他估计，他们总共获利约 10 万美元。

已被还押候审的Ang承认犯有四项串谋诈骗罪和一项串谋诈骗未遂罪。

他还承认了两项与赌博有关的指控和一项刑事恐吓指控。

量刑时还考虑了另外 33 项指控。

其中一名同案犯，23岁的克洛伊·洛·志怡（Chloe Low Zhiyi），与他有恋爱关系，也于11月5日被定罪。她将于12月被判刑。

Ang 于 2024 年 4 月左右策划了这一阴谋，并在约会平台上创建了虚构女性的个人资料。

他女扮男装，与潜在的约会对象聊天，并邀请她们一起打麻将。

这些原本的约会对象都成了这场作弊游戏的受害者。

一旦麻将比赛安排好，Ang就会让他的一名女性同伙假扮约会资料中的女性。

她将担任游戏的主持人，游戏将在包括 SAFRA 大巴窑在内的多个地点举行。

在游戏中，昂让他的同伙使用假名。他还要求其中一些人假装互不相识，以防受害者拒绝参与游戏。

昂制定了每局游戏的规则和赔率，并以此计算奖金。大多数情况下，他还会指定另一名同伙作为替补玩家。

这位玩家会观察受害者的游戏风格，并将信息分享给同伙，以降低受害者获胜的几率。

每个同谋都有特定的角色。

第一位玩家的任务是阻止受害者获胜。第二位玩家的任务是尽快组成一手好牌，或者通过打出第三位玩家需要的牌来帮助他/她。

第三名玩家必须组成尽可能大的牌型，以最大限度地增加受害者需要支付的金额。

2024 年 4 月至 6 月期间，至少安排了 28 场涉及不同受害者的游戏。

至少有19场比赛如期举行。

Ang参加了12场比赛，而Low参加了10场比赛。

此外，他还于 2025 年 4 月对他的一名同伙 Belinda Chee Yan Lin（25 岁）实施了刑事恐吓。

他曾威胁要把她从八楼的公寓扔下去。

刘特佐、谢志强和其他五人的案件仍在审理中。

10 月，同案犯 Olivia Chin Hui Zhen（31 岁）被判处 8 个月监禁和 3000 美元罚款。

11 月 5 日，Ang 的律师，来自 Avalon 律师事务所的 John Koh 请求法官判处他的当事人 19 至 21 个月监禁，并处罚款 15,000 美元。

他说Ang没有对Chee使用武器。

沙菲克·阿尔哈提卜是《海峡时报》的法庭记者，主要报道国家法院审理的刑事案件。