Police are appealing for information after seven people were injured in a fight in Sydney's Upper North Shore at the weekend.
Strike Force Kamilaroy has been established by detectives from Kuring-Gai Police Area Command to investigate after six teenagers were stabbed at a park on Gilroy Road, Turramurra, about 11.30pm on Saturday (12 January 2019).
Officers also found a 34-year-old man with head and upper body injuries.
They were all treated at the scene by paramedics.
A 17-year-old boy and a 16-year-old girl were taken to Royal North Shore Hospital where they underwent surgery. Their injuries are not considered life-threatening.
A 19-year-old man, a 15-year-old boy and two teenage males, aged 17, were taken to Westmead Hospital for treatment and have since been released.
The 34-year-old man remains at Westmead Hospital under police guard.
Police have been told the man allegedly stabbed the teens during a fight.
As inquires continue, investigators are urging anyone with information and in particular mobile phone footage or images regarding the incident are urged to contact Hornsby Police Station on 9476 9799 or Crime Stoppers as a matter of priority.
Anyone with information about this incident is urged to contact Crime Stoppers: 1800 333 000 or https://nsw.crimestoppers.com.au. Information is treated in strict confidence.
