Police are investigating the circumstances surrounding the assault of a teenager in Castle Hill overnight, NSW Police say.
About 10.30pm today, emergency services were called to Nottingham Avenue following reports of a stabbing.
On arrival officers located a 17-year-old male suffering a wound to his chest.
He was treated at the scene before being taken to Westmead Hospital where his condition is stable and not considered life threatening.
A crime scene was established outside the home while detectives from The Hills Local Area Command commenced their investigation.
Early inquiries suggest the teen was involved in a physical altercation with another man outside his home before suffering the wound to his chest.
Inquiries are continuing.
Police are urging anyone with information in relation to this incident to call Crime Stopers.
