Three masked men armed with knives robbed a Bunbury fast food restaurant last night.
Police say the men, whose faces were covered with balaclavas and bandanas, threatened staff at the Chicken Treat store at the Minninup Forum in Withers at about 8.50pm.
Two of the men demanded money while the third guarded the front door.
The trio stole cash from the till before they fled towards Hudson Road.
The men are 20 to 30 years old with fair skin and wore hooded tops.
One of the men was tall with a slim build, while the other two were shorter and of a medium to solid build.
Police are seeking the publicÃ¢â‚¬â„¢s help with their investigation into the armed robbery.
Anyone with information on the incident is asked to contact Crime Stoppers on 1800 333 000.