Police have charged a man after he allegedly robbed a convenience store before breaking into a unit and crashing a stolen car at Emerton overnight.

Just before 5.30am (Saturday 2 January 2016), a man walked into a store on Popondetta Road allegedly armed with a piercing gun.

The man threatened an employee before fleeing with a number of items.

Police were alerted and officers from Mt Druitt Local Area Command attended and established a crime scene.

A short time later, police were called to nearby Bunting Street where a man was being detained by residents.

It’s alleged the man had broken into a unit and then stole a vehicle before crashing it into three vehicles.

The 29-year-old was arrested and taken to Mt Druitt Hospital for blood and urine testing.

The man was then taken to Mt Druitt Police Station where he was charged with robbery while armed with offensive weapon; aggravated break and enter and commit serious indictable offence; unlicensed driver; and not reverse vehicle safely.

He was bail refused to appear at Parramatta Bail Court tomorrow (Sunday 3 January 2016).