Police have released CCTV footage of a man they would like to speak to, following two armed robberies in South Hurstville in September and October, which may be linked.

About 12.50am on Tuesday 22 September 2015, a 20-year-old man was working at a convenience store on King Georges Road, when a man armed with a knife approached him, demanding money.

The armed man fled the scene, taking cash. The employee and witnesses were uninjured and contacted police.

Police attended and established a crime scene.

About 9.30pm on Thursday 8 October 2015, a 62-year-old woman and a man were in the process of closing a pharmacy on King Georges Road, when a man armed with a knife entered the store.

Police have been told the armed man demanded money, before fleeing the scene taking cash.

The two employees were uninjured and police were notified. A crime scene was established and investigations commenced.

Following inquiries, police attached to the Metropolitan Robbery Unit established Strike Force Shawn to investigate the two incidents, which investigators believe may be linked.

Strike Force Shawn detectives today have released footage of a man who may be able to assist with their investigations.

The man is depicted in the footage as wearing a dark hooded jumper/jacket, black tracksuit pants, white running shoes, and a dark-blue scarf covering his face.