Knives, syringe used to rob servos

THREE service stations in Casey were robbed on the same day last week, with a knife and syringe among the weapons used to threaten staff.
A man armed with a knife entered the Coles Express Service Station in Hallam on Saturday morning about 4.20am and demanded cash from the attendant.
The staff member complied with the demands and handed over money from the cash register.
Soon after, a man entered the BP Service Station on Princes Highway in Doveton bearing a kitchen knife and a syringe.
Police said he demanded a single cigarette from the service station attendant, who refused.
The attendant then locked the service station doors so the man could not escape.
But police said the attendant unlocked the doors after the man began to strike them.
The third robbery occurred at the Quix Service Station on Narre Warren-Cranbourne Road, Narre Warren.
Police were called to the business about 11.30pm on Saturday after an unarmed man demanded cash from the console operator.
The staff member handed over a small amount of cash.
Anyone with information is asked to call Crime Stoppers on 1800 333 000.