Police are investigating the armed robbery of a fast-food restaurant at Smithfield last night.

About 6:50pm, Saturday 22 February 2014, a man entered the restaurant on the Cumberland Highway where he jumped the counter and threatened staff with a screwdriver.

He was handed cash and fled in a stolen white Ford Laser which was found abandoned in Little Street after being involved in a collision with a parked car.

Police from Fairfield Local Area Command and the Dog Unit conducted a search of Little Street and the surrounding area but were unable to locate the man.

A crime scene was established at the restaurant and examined by specialist forensic officers while the Ford Laser was seized for forensic examination.

Detectives are continuing their investigations into the robbery and are looking for a man described as being of Caucasian appearance, 180cm tall with a slim build, aged in his 40s with slight facial stubble.

He was wearing a black round brimmed hat, a grey zip-up hooded jumper, shiny grey track pants and black shoes.