A police officer has undergone surgery after being stabbed multiple times in Sydney’s south-west.

The incident took place at Sadleir, near Liverpool, just before 7am.

Two officers attended a home on Heckenberg Avenue, trying to find a 58-year-old man wanted on an outstanding warrant.

A neighbour says she saw the police officer covered in blood, and wrapping a piece of material around his neck @2GB873

— Helene Lambetsos (@helenelambetsos) June 11, 2019

A 27-year-old man allegedly confronted the officers before stabbing a male constable in the hand and slashing him in the neck.

Neighbours witnessed the aftermath, telling Macquarie National News reporter Helene Lambetsos the policeman was covered in blood.

The 24-year-old constable was taken to Liverpool Hospital in a serious but stable condition.

NSW Police Assistant Commissioner Peter Thurtell tells Ben Fordham the officer has undergone surgery for a wound to his neck “which narrowly missed a major artery”.

“He’s out of surgery now and doing well. Further surgery is yet to happen on his wrists in the future, and that’s yet to be determined when that will be done.”

He described the weapon used on the officer as “a steel arrow bolted to a stick”.

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MEMBER SERIOUSLY INJURED

We are aware a member has been seriously injured at Liverpool & now receiving emergency medical care. We have local reps assisting him & colleagues. Expert assistance on the way. Prayers for our brother in blue #BlueFamily #NoOrdinaryDay

— PoliceAssociationNSW (@PoliceAssocNSW) June 10, 2019

The 27 and 58-year-old men were both arrested at the home.

The 27-year-old man has been hit with a number of charges including wounding a law enforcement officer in the execution of their duty and using a weapon to avoid apprehension.

He has been refused bail and is due to appear at Liverpool Local Court on Tuesday afternoon.

The 58-year-old man has also been charged.

Image: Nine News Sydney