Mount Druitt detectives have charged a fourth teenager following the attempted murder of another teen in Sydney's west earlier this month.
About 10.40pm on Tuesday 6 January 2026, emergency services were called to an address on Sedgman Crescent, Shalvey, following reports a party of about 40 people had been underway before a brawl started in a driveway.
On arrival, officers attached to Mount Druitt Police Area Command located a 17-year-old boy with multiple stab wounds.
He was treated at the scene by NSW Ambulance paramedics and taken to hospital in a critical condition.
The teen remains in hospital in a stable condition.
Officers from Public Order and Riot Squad, Operations Support Group, and the Dog Unit assisted with management of crowds who had remained at the location.
Police established a crime scene and commenced an investigation into the incident.
As part of investigations, detectives have arrested and charged two 16-year-old boys and a 17-year-old boy over their alleged roles in the stabbing. All three teens remain before the courts.
Following further inquiries, detectives arrested a third 16-year-old boy at a home in Lethbridge Park, about 6.50pm yesterday (Saturday 17 January 2026).
He was taken to Mount Druitt Police Station where he was charged with attempted murder.
The teen was refused bail to appear before children's court today (Sunday 18 January 2026).
