Evan John Kay, 18, and a 16-year-old boy faced court on Wednesday after they entered the business at 8.20pm on Monday night and demanded cash and cigarettes.

Senior Constable Cameron Ferrier opposed bail on behalf of the police.

“There was a level of premeditation because they disguised themselves beforehand and the facts indicate they monitored the victim for a short time,” he said.

Senior Constable Ferrier said Kay had an active probation order from a juvenile offence and the minor had breached a bond.

According to police facts, the two accused dressed in makeshift balaclavas and saw the victim re-enter the business after checking the fuel pumps.

When the pair reached the counter, Kay pulled out the knife, telling the victim, “I'll kill you if you don't put the money in the bag”.

The minor was beside Kay during the incident and demanded more money and cigarettes, moving towards the door at times to check for customers.

The pair then fled via Esso Park, dropping balaclavas and gloves in the park and Hamer Street.

The facts said they then walked to Moulder Park where they swapped dark jackets with the hoodies they wore underneath, walked to Lords Place and caught a taxi home.

The facts said police were able to identify the minor from CCTV footage along Summer Street and once he was arrested, Kay rang triple zero and admitted his involvement.

Solicitor Andrew Rolfe acted for both accused, saying both made full admissions and Kay had handed himself in to police.

“That would have a bearing on the risk [in awarding bail],” he said.

Mr Rolfe proposed curfews unless the two accused were in the company of their mothers, not to associate with one another, not to approach the victim and not to go within 50 metres of the service station.

Registrar Olivia Lee awarded bail to both males on those terms, but she noted Kay's record did him “no favours”.

“This is really an acceleration of your previous offences and the court has to take into account the safety of the community,” she said.

“I would be sending you to full-time adult custody and that's where you're heading really fast.”

The pair will again face court on July 11.