Police are investigating links between three Perth petrol stations armed robberies after staff were held-up at knifepoint.

The first robbery occurred around 3.10am last Wednesday after a man threatened an attendant at knifepoint at a petrol station on Lenore Road in Pearsall, about 30km north of Perth.

A police spokeswoman said the man brandished a knife and demanded cash from the attendant, before fleeing on foot.

Less than 24 hours later, another petrol station on Great Eastern Highway in Redcliffe was robbed when a man armed with a kitchen knife demanded cash from the attendant.

The same petrol station was targeted for a second time on Monday, when a man armed with a kitchen knife demanded cash from the attendant.

The man fled the store around 1.20am after the money was handed over.

A police spokeswoman said in each robbery the man was given cash and left the store on foot.

The man is described as being in his mid to late twenties, fair skinned, around 170 to 178cms tall with a solid build.

Police have asked anyone with information in relation to these incidents to contact Crime Stoppers on 1800 333 000 FREE.

Extracted in full from Perth Now.

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