Radicalised Online, Three Teenagers Planned to Kill in Singapore
Singapore's Internal Security Department said on July 27 that it had detained three teenagers — aged 14, 15 and 19 — who were radicalised online and had begun preparing attacks inside the city-state. One boy's path to a planned school stabbing ran through first-person-shooter games and a diet of violent extremist content, officials said, in what the government described as a growing pattern of youth radicalisation.
Singapore disclosed on July 27, 2026, that it had detained three self-radicalised male citizens — a 14-year-old, a 15-year-old and a 19-year-old — under the Internal Security Act, a law that permits detention without trial. The three had been issued separate Orders of Detention in April, May and June, and although their cases were unrelated, all three “were self-radicalised online by violent extremist ideologies, and had made preparations to conduct local attacks,” the Internal Security Department, or ISD, said in a statement.
“In the past three months, ISD have detained three young boys under the ISA,” K. Shanmugam, the coordinating minister for national security and minister for home affairs, told reporters at a briefing on the cases. “Three different cases, but all three planned to attack in Singapore,” he said. Each boy, the authorities said, had absorbed his ideology from material circulating on the internet.
A path that ran through Roblox
The youngest, a 14-year-old secondary-school student, was radicalised through what the authorities call composite violent extremism — a blend of clashing ideologies rather than a single doctrine. He subscribed to the accelerationist beliefs of the neo-Nazi network Atomwaffen Division and to white-supremacist ideas, idolised past mass shooters, and also drew on Islamic State material, the ISD said.
He was “radicalised by what we call, composite violent extremism,” Shanmugam said, describing a process that ran “through online first-person-shooter games on Roblox and consuming violent content online.” Fuelled by grievances over bullying and academic stress, the boy planned to “conduct mass-casualty stabbing attack at his secondary school” during the June school holidays, intending to use a knife from home, Shanmugam said. According to the ISD, the student had drafted a manifesto setting out his plan and a list of targets, among them non-Muslim teachers and classmates. He was arrested before the holidays began.
From an online feed to a caliphate
The 15-year-old, a Secondary Four student, was self-radicalised online by Islamic State ideology and came to support militant groups fighting Israel, including Hamas, Hezbollah and the Houthis, the ISD said. His radicalisation deepened after the October 2023 Hamas attack on Israel and the war in Gaza that followed.
By January 2026, the authorities said, the boy regarded himself as an Islamic State member and had pledged allegiance to the group in his heart, convinced of its aim of fighting non-believers to establish an Islamic caliphate. He wanted to carry out an attack in Singapore in furtherance of the group's cause and to help build a caliphate in Southeast Asia through violence, according to the ISD statement.
An air base and a list of classmates
The oldest of the three, a 19-year-old identified by the authorities as Tan Jun Jie, was a staunch supporter of the Islamic State who researched knife attacks and drew up plans to strike both overseas and at home, the ISD said. He had also attempted to mount denial-of-service cyberattacks against the websites of Muslim organisations in Singapore that he regarded as promoting deviant teachings.
Shanmugam said the 19-year-old “considered himself to be a member of ISIS by the start of this year, 2026, and he made two attack plans — one targeted SAF officers at Sembawang Air Base, the other targeted LGBTQ students in his own school,” referring to the Singapore Armed Forces, according to the transcript of his remarks.
A pattern the state says it is watching
The three cases are the latest in a run of young Singaporeans drawn to violent extremism through the internet. Since 2015, 23 people aged 20 or younger have been dealt with by the Internal Security Department, the authorities said. In each of the latest cases, the boys had shared their extremist views with people around them, and the government has repeatedly said that family and friends are best placed to notice the warning signs early.
“At MOE, we are very concerned by the growing number of children and young people who have been radicalised online,” Desmond Lee, the minister for education, said at the same briefing, referring to the Ministry of Education, according to the official transcript.
The reach of the material the boys consumed spanned the ideological map — jihadist propaganda, neo-Nazi accelerationism, the veneration of mass shooters — but the mechanism was the same in each case: an isolated teenager, a feed, and content that hardened into a plan. Researchers who study radicalisation have long noted that recommendation-driven platforms and gaming spaces can funnel young users toward ever more extreme material, and that the pathway from a screen to a weapon can be short. In Singapore, the authorities said, it was interrupted three times this year before anyone was harmed.