Overview
- Explosions during Friday prayers at the SMA 72 school mosque in early November injured 96 people; four devices detonated and three failed.
- Police say the student acted alone and followed YouTube tutorials to assemble the devices at home.
- Materials such as potassium chloride and nails were purchased on online marketplaces, with the teen telling his father the items, including toy guns, were for cosplay.
- Investigators link his activity to an international Telegram channel that glorified attacks like Christchurch and Columbine; Telegram says it removes violent content at scale using AI, while Google did not comment.
- The suspect is in stable hospital condition and will be evaluated by the parole and probation office to determine juvenile proceedings; separately, police arrested five people accused of recruiting 110 children into terrorism networks.