Police are investigating the armed robbery of a pizza delivery driver in the state’s Lake Macquarie region overnight.

Just before 8.30pm (Sunday 19 October 2014), the 19-year-old man drove to Northville Road at Barnsley to deliver a pizza.

Police have been told that when he arrived he was confronted by two men who were armed with a firearm.

The men demanded money before stealing his bag, containing a small amount of cash.

They fled and fired a shot in the air while running; however, no one was injured.

Police were alerted and officers from Lake Macquarie Local Area Command attended and conducted a search of the area with assistance from the Dog Unit.

Investigators are appealing for public assistance to identify and locate those involved.

The first man is described as being of Caucasian appearance, aged in his mid 20s, approximately 180cm tall, with a medium build and a lip ring.

The second man is of Caucasian appearance, aged in his early 20s, approximately 175cm tall and with slim build.

Both men were wearing dark hooded jumpers.