Three males, two aged 17 and one 18, have been hospitalised with stab wounds in two separate incidents in Sydney over the weekend.

Emergency services were called to a party at a hall in Winston Hills in the city’s west on Saturday night following reports of a brawl. 

An 18-year-old man was found with a stab wound to his thigh.

Police were told a group of people arrived at a party uninvited and were directed to leave. 

They returned a short time later and a “physical altercation occurred”, police said. 

The 18-year-old was treated by NSW Ambulance paramedics at the scene before being taken to Westmead Hospital in a stable condition, where he underwent surgery.

During a search of the crime scene, officers found a knife they believe to be linked to the incident.

In a separate incident, two 17-year-old boys were stabbed at Canley Heights in the city’s southwest.

Five paramedic road crews were dispatched to the stabbing on Canley Vale Road just before 7am on Sunday.

One of the boys remains in critical condition with head, back and internal injuries while the other has been released from hospital, NSW Police said.

NSW Ambulance Inspector Merinda Hill said paramedics worked to stabilise the victims before taking them to Liverpool Hospital. 

“The male who had suffered central stab wounds was of major concern, as these kinds of injuries do have the potential to be life threatening,” she said. 

“He will require emergency surgery.”

Police arrested a 17-year-old boy over the Canley Heights incident, and taken to Fairfield police station where he was assisting with enquiries.

Police seized a car from outside a unit block in Liverpool and are looking for another person who might be able to assist their investigation.

The person was described as a male aged in his late teens with a ‘mullet’ haircut and goatee beard, who was wearing a grey hoodie with a small logo on the chest, grey shorts and light-coloured sneakers.

AAP

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