Lincolnshire Police are appealing for information after a man drew a firearm in a convenience store in Grantham.
The attempted robbery happened at the Premier store on Hillingford Way on Sunday, November 3.
No-one was injured.
A police spokesperson said: “While one person stands outside the store, the other person enters the Premier store, before drawing a firearm, looking around, and then exiting the store.
“No-one was injured as a result of this incident.
“If you believe you recognise the individuals pictured, or know anything about the incident, please call 101 and state that this is under incident 423 of November 3.”