Investigations are underway into two convenience store robberies in Rotherham within the space of two hours.
A store on St Leonards Avenue in Thrybergh was held up at around 5.45am on Friday, March, 23 and at 7.25am a store on Flanderwell Lane in Bramley, was targeted.
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On both occasions a man entered the shops with a scarf covering his face and he led staff to believe he was armed.
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In the first raid £65 was taken and in the second the crook escaped with £60.
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In both incidents the robber was described as 6ft tall, white, slim and was said to have been wearing dark clothing.
Acting Detective Inspector Aneela Khalil-Khan said: "Thankfully there were no injuries sustained by anyone during the robberies, however it is an incredibly distressing incident to be made to endure and staff are understandably shaken and upset.
"We are treating the robberies as linked and have already made various enquiries in connection to both crimes including forensic analysis and viewing CCTV footage.
"Were you in the Thrybergh or Bramley areas on Friday morning? Did you see anyone acting suspiciously? Even if you think the information you have is insignificant, it could prove to be vital to the investigation and identifying the man responsible."
Anyone with information should call South Yorkshire Police on 101 or Crimestoppers on 0800 555111, quoting either incident number 122 or 153 of March 23.