Police are investigating the armed robbery of a service station at Durack last night.

Initial information suggests around 11.55pm two males entered the Rosemary Street service station and made demands for money. One of the men was armed with a knife.

The 23-year-old male attendant complied with the demands and handed over a sum of cash.

The men were last seen fleeing on foot in a southerly direction along Rosemary Street.

No one was physically injured during the incident.

The first man is described as Caucasian in appearance, wearing a black hooded jumper and black shorts. His face was covered with a bandana.

The second man is described as having a dark complexion, thin build, wearing green singlet and black and white shorts and a black cloth over his head. His face was covered by a green coloured cloth.

Police investigations are continuing.