Teen Accused of Lying in Wait Before Stabbing Former Classmate Outside Sydney School

A 15-year-old boy was left seriously injured after a former classmate allegedly attacked him with a kitchen knife in broad daylight outside Casula High School in Sydney, Australia. The shocking incident unfolded on Monday morning, November 9, 2026, as the younger teenager was walking near the school. CCTV footage reportedly captured the alleged attacker, aged 16, waiting near a tree before crossing the street and approaching his former classmate.

The victim’s confusion quickly turned into desperate cries for help as the attack began. Witnesses reportedly heard him shouting for someone to intervene while the older teenager allegedly stabbed him multiple times. Police were called to the scene shortly before 8:30 a.m. and found the 15-year-old lying on the pavement with serious injuries. Emergency responders provided first aid before rushing him to Liverpool Hospital, where he was listed in serious but stable condition.

The injuries were extensive. The victim suffered multiple wounds to his abdomen, a collapsed lung, liver injuries and cuts to his arms and legs. According to the report, the knife narrowly missed his heart. Bystanders reportedly stepped in to stop the alleged assault, forcing the attacker away from the victim.

The 16-year-old suspect allegedly fled the scene and hid the kitchen knife in a bush approximately 300 meters away. Police launched an investigation and arrested him around four hours later at a residence in Hinchinbrook. He was subsequently charged with wounding a person with intent to cause grievous bodily harm. New South Wales Police Superintendent Robert Toynton described the incident as a shocking event outside a high school.

The teenager appeared in court on November 10, where CCTV footage of the alleged attack was reportedly presented. His bail application was refused, meaning he will remain in custody until his next court appearance, scheduled for January. The case has raised serious concerns about violence involving young people and the safety of students around schools. Meanwhile, the injured boy is receiving medical treatment as investigators continue examining the circumstances surrounding the attack.

Source: https://www.thesun.co.uk/news/40983263/teen-stabs-former-classmate/