Regional Investigations Unit detectives are hunting a man involved in an armed robbery at a Koondoola supermarket overnight.
A masked offender entered the store on Koondoola Avenue at around 8:15pm, carrying what appeared to be a firearm.
He threatened a staff member and demanded money and fled on foot with a sum of cash towards Meldrum Way.
The only description currently available is that he is male of slim build because his clothing concealed his features.
Anyone with information about the incident or who saw the man is urged to call Crime Stoppers on 1800 333 000, or make a report online at www.crimestopperswa.com.au.