Police are looking for a man following the spate of armed robberies on supermarkets and bottle shops across Sydney over the last two months.

About 2:15pm today, (Wednesday 12 November 2014), a man with his face covered entered the store on Warringah Road, and threatened the male shopkeeper with a knife.

He was handed cash and was last seen running towards the Roseville pedestrian bridge near Arthur Street.

Police from Northern Beaches and North Shore Local Area Command attended the scene and conducted a search of the area but were unable to locate the man.

A crime scene was established at the store and examined by forensic officers.

Detectives from the Metropolitan Robbery Unit are investigating the robbery and believe it is linked to robberies on supermarkets in Rydalmere, Meadowbank and Guildford; as well as the robbery of a bottle shop at Lindfield.

Police have established Strike Force Urandangie to investigate the robberies and have released a closed-circuit television image of a man who they would like to speak to.

The man depicted in the image is described as being aged in his 20s with an olive complexion, a thin build, short brown hair and wearing a blue hooded jumper and carrying a black backpack.

Police have also released an image of an early 1990 model grey-coloured Holden Commodore sedan believed to be used during the robberies.

Anyone with information about the robberies or the identity of the man depicted in the image is asked to contact Crime Stoppers.

Details of the armed robberies include:

• A supermarket on Victoria Road, Rydalmere on Monday 27 October 2014,
• A supermarket on Bay Drive, Meadowbank on Thursday 30 October 2014,
• A supermarket on Woodville Road, Guildford on Tuesday 4 November 2014,
• A bottle shop on Moore Avenue, Lindfield on Tuesday 11 November 2014, and;
• A bottle shop on Warringah Road, Forestville today (Wednesday 12 November 2014).