S’porean man, 20, posed as a girl, 14, to flirt with man, 21, & extort him of S$20,000 for seeking sex with minor

A 20-year-old Singaporean man was convicted of extorting a 22-year-old man by threatening to report him to the police for seeking sexual intercourse with a minor.

Koh Anthony Jae Duran pleaded guilty to one count of extortion and another count of cheating on Aug. 6.

He had pretended to be the minor.

Revalation

In court documents seen by Mothership, in October 2025, Koh was chatting with a female friend, identified as Ryane.

He learned that a 22-year-old man was flirting with her via Instagram.

Due to the man's incessant messaging, Koh and the female friend decided to do more.

They found out that the man was 21 years old at the time and that he had lied to Ryane that he was 17 years old, and that he had a supposed history of dating girls younger than him.

Catfish

Intending to ridicule the man, the pair devised a plan to "catfish" him.

They drew inspiration from Instagram reels they had watched.

Koh would pose as a 14-year-old girl who wanted to date and have sex with older men, while Ryane would pose as a matchmaker who would introduce the fake child to the man through an Instagram group chat.

The man and the fake minor would then engage in flirtatious exchanges.

The fake minor and the man then agreed to meet at Stevens MRT station on the evening of Oct. 21, 2025, for a dinner date, and for the prospect of having sex thereafter.

Koh and Ryane initially intended to use this opportunity to expose the man's true identity and to ridicule him as a “paedophile” who targets younger girls.

However, Ryane was unaware that Koh intended to use this as an opportunity to extort the man.

Koh also used ChatGPT to find out about precedents of others extorting paedophiles for their wrongdoings.

Extortion

On Oct. 21, at about 9:50pm, Koh recognised the man's face from photos on Instagram and approached him.

Koh posed as the “girl’s brother” and threatened the man to take a condom out of his backpack.

Koh knew the man had a condom as he previously sent the minor a message saying he would bring one along for sex.

Koh recorded the incident and took a picture of his identity card.

He then threatened the man, saying that if he did not comply, he would notify MRT station staff and alert the police.

Both men then moved to a location in the vicinity of the Toa Payoh area by bus to continue talking.

They agreed to move to that location as the man wanted to settle their dispute somewhere more private, as Koh was being very aggressive and attracting the attention of passers-by.

Koh chose that location as it was near Toa Payoh Neighbourhood Police Centre.

Throughout their interactions, Koh threatened to take the man to the police.

The man, fearing damage to his reputation, broke down in tears and pleaded for mercy.

Koh then extorted S$20,000 as hush money from the man, proposing that it would be paid through instalments over five years at S$300 per month.

The man agreed out of fear and paid Koh S$100.

No further payments were made.

Mother

On the morning of Oct. 22, 2025, Koh was checking his WhatsApp chats when he realised the man had blocked him.

Koh was concerned the man would not pay the instalments.

He decided to extort the man’s parents, whom he perceived to have more money to pay.

To locate them, he used the photos he took of the man's identification card and found his parents at their registered residential address.

At about 8:22pm, the man's mother was at home and attended to Koh, who rang the doorbell.

Koh introduced himself as the “girl’s brother”.

He claimed that his father was angry and was ready to beat up the woman's son unless she paid S$20,000 to him.

Koh also showed the woman the video he took showing her son taking out the condom from his backpack.

He then told the man's mother she had two options to prevent further escalation.

Koh could either report the incident of the man targeting a 14-year-old girl for sex to the police or she could pay, on her son's behalf, the S$300 per month for five years as punishment.

The second option amounted to a total sum of S$18,000, and a lump sum of S$2,000, which was demanded by December 2025.

The victim's mother told Koh that she would go with the second option and passed her mobile phone number to him.

She mentioned that she would work towards paying the S$2,000 that Koh’s father demanded as she did not have the means to pay him any money at the time of the offence.

When the victim returned home later that night, his parents questioned him and he confirmed what he did.

However, they came to the conclusion that Koh was a scammer and went to the police on Oct. 23.

Guilty

Upon reflection, Koh apparently felt guilty.

On Oct. 24, 2025, he then returned the S$100 received from the victim to his mother and sent a text of apology to her.

Unbeknownst to Koh, the victim had already lodged a police report.

On Oct. 25, 2025, 6am, Koh was arrested.

He was charged on Oct. 27, 2025.

Cooperated

The prosecution urged the court to call for a reformative training suitability report.

According to Shin Min Daily News, Koh’s lawyers reportedly said he did not evade responsibility for his actions and had fully cooperated with investigations and pleaded guilty early.

His lawyers also noted that Koh is currently a student at the Institute of Technical Education (ITE) and has the support of his family.

They emphasised that even before police intervention, Koh voluntarily apologised to the victim and refunded the money, demonstrating remorse.

His lawyers urged the judge to impose a light sentence for Koh.

Koh pleaded for leniency.

The case was adjourned to Aug. 13 for a mention.

He will be sentenced on Sep. 23.