Perth locals are being asked not to approach a guy who is believed to be armed, and to contact the authorities immediately.
The individual is being searched for by the police.
Dear Jordy, This evening, investigators in Rockingham were on the hunt for Michael Lock, who they say can provide light on a continuing armed robbery case.
The 28-year-old may have a weapon on his person, according to the police.
The police have made a photo of Lock public. He has short brown hair, blue eyes, and a sturdy physique; he stands at 180 centimeters.
Mandurah, Rockingham, and the neighboring regions are known to be his regular haunts.