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Singapore detains 3 youths under security law, 1 planned to attack teachers, schoolmates

By Thomson Reuters Jul 27, 2026 | 5:11 AM

SINGAPORE, July 27 (Reuters) – Singapore has detained three youths aged 14, 15 and 19 under its internal security law for allegedly planning attacks on schools and military facilities ​within the country, authorities said on Monday.

The 15-year-old was “self-radicalised” by ‌Islamic State online content, while the other two had planned knife attacks, the Internal Security Department said in a statement.

Here are some details:

• The 19-year-old tertiary student also supported the Islamic State and planned to conduct knife ‌attacks ​against Singapore Armed Forces personnel at an ⁠airbase and against LGBT students ⁠in his school, the statement said.

• The 14-year-old was arrested in May, a month before he intended to perpetrate a mass stabbing attack against non-Muslim teachers and students in his ​school during the school holidays with a knife and a penknife from home.

• He had written a 21-page manifesto, which he ⁠intended to disseminate on his social ⁠media accounts one day before the attack, which was ​planned for June.

• The department described the 14-year-old’s case as a “close ​shave”, saying someone at his school had noticed signs ‌he had been radicalised and alerted the authorities.

• Authorities said he subscribed to a “salad bar” of multiple extremist ideologies, a phenomenon known as “composite violent extremism”. He supported white supremacy, the Islamic State, and ⁠antisemitic and neo-Nazi narratives.

• The three were detained under the island’s Internal Security Act and can be held for up to two years without ⁠trial.

• Authorities said ‌in the past decade or so, more than ⁠half of the 23 youths dealt with under ​the ‌act intended to mount attacks in Singapore.

• “ISD reminds ​the public ⁠to remain vigilant to signs that someone around us may have become radicalised, and seek help from the authorities early,” the statement said.

• Police in Southeast Asia have been grappling with a surge in teenagers plotting violence inspired by white supremacists.

(Reporting by Xinghui Kok; Editing ​by David Stanway)