Detectives are investigating the armed robbery of a convenience store at Grange by two men at knifepoint overnight.

Around 10.20pm, two men entered the Days Road store and threatened the male store attendant with a knife before fleeing with a sum of cash and cigarettes.

The male attendant was not injured during this incident.

One of the men is described as Pacific Islander in appearance, aged in his early 20s, approximately 185cm tall, with a proportionate build. He was wearing a dark blue hooded jumper, blue three-quarter length shorts and a white bandanna.

The second man is described as Caucasian in appearance, aged in his mid-20s, approximately 185cms tall, with a slim build. At the time, he was wearing blue jeans and an orange t-shirt.