A man has been charged over a number of alleged offences, including possess prohibited firearm and goods in custody, following a siege in Carrington early this morning.

Just after 6am (Sunday 20 December 2015), officers attached to Newcastle City Local Area Command were called to Young Street, following reports of a man allegedly armed with a firearm in a unit.

Two women were in the unit with the man at the time of the incident, with one leaving shortly after police arrived at the scene.

Local police, with the assistance of NSW Police Negotiators and officers from the State Protection Support Unit, spoke to the man, and about 10am, he surrendered to police.

No one was injured during the incident.

Police searched the property, where they allegedly located a shortened firearm, tablets and a crystal substance believed to be illicit drugs, and a bicycle believed to have been stolen.

All items have been seized for forensic examination.

The 23-year-old man was arrested at the scene and taken to Newcastle Police Station, where he was charged with possess shortened firearm, possess ammunition, not keep firearm safe, and goods in custody.

He was refused bail, to appear at Newcastle Local Court tomorrow (Monday 21 December 2015).

Investigations continue.