Investigators believe a series of armed robberies across Newcastle this week are linked.
Just before 6am on Tuesday, police responded to reports of a botched hold-up at the 7-Eleven on Glebe Road at Adamstown.
Officers were told a man, allegedly wielding a firearm, entered the store and demanded the money in the register but fled empty handed.
Then shortly after 1am on Thursday, another service station – this time on Turton Road, New Lambton – was targeted by a man believed to be armed with a knife who was able to make off with a small amount of cash.
As part of inquiries, police have released an image of a man wanted for questioning.
Anyone with information should contact Crime Stoppers.