Police are investigating an aggravated robbery that occurred early this morning at Pooraka.

At about 1am, two men armed with a screwdriver and knife entered the BP service station on Bridge Road and demanded money.

They left the store with an amount of cash and cigarettes and fled the scene in a red BMW sedan, with South Australian registration of AA963V.

One of the suspects was wearing an orange shirt, a black hooded jumper and jeans.

The second suspect was wearing a white jacket, with a dark blue hooded jumper underneath and dark-coloured pants. Both men had their faces covered.

The shop attendant suffered minor injuries during the incident.