Sturt Police are investigating a robbery at a business on Morphett Road, Seacombe Gardens yesterday afternoon.

At about 4.30pm on Monday 9 March, a man armed with a knife entered the premises and demanded money.  He took a cash box and left the scene.

The victim was not injured during the incident.

The suspect is described as a man aged about 35 years, with short black and grey hair, tattoos on both hands and was wearing a black hooded top, blue jeans and running shoes.

Police have released CCTV of the suspect, obtained at the scene of the robbery, and ask anyone who recognises him to come forward.  Anyone with information that may assist the investigation is asked to contact Crime Stoppers on 1800 333 000 or online at https://sa.crimestoppers.com.au/