REGIONAL Investigations Unit Detectives are searching for a man linked to an armed robbery that happened in Ballajura last night.
About 10.30pm, the man entered a petrol station on Illawarra Crescent.
He threatened a staff member before going behind the counter while holding a crowbar.
He assaulted the staff member before forcing the till open, taking some cash and leaving the scene.
Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOWThe man is described as fair-skinned, between 30 to 40 years of age, 180cm tall with black-grey hair.
He was wearing a dark, hooded jumper and blue jeans.
Police urged anyone with information to call Crime Stoppers on 1800 333 000 or to make a report online at crimestopperswa.com.au.