A 17-year-old is critically injured after being stabbed in a fight at a crowded, unauthorized 15th birthday party in Sydney.

A 17-year-old boy is in critical condition after being stabbed multiple times during a violent brawl at a gatecrashed 15th birthday party at an Airbnb in Shalvey, Sydney’s west, on Tuesday night. Emergency services responded around 10:40 p.m. to reports of a disturbance involving about 40 people in the driveway. Police, including riot officers and a dog squad, secured the scene, recovered multiple knives, and launched an investigation. No arrests have been made, and authorities are seeking dashcam footage and public tips. The event was intended for a small group but drew a much larger crowd. The motive remains unclear, and the investigation continues.