Do you recognise this man caught on CCTV carrying out an armed robbery at the petrol station in Barnetby Top on Sunday, March 2.
At approximately 4.15am a man approached the shop assistant who was outside on the forecourt.
His face was covered by a black balaclava and he asked the assistant to go back into the shop and hand over cash.
The offender was in possession of a small, black-coloured firearm.
The shop assistant walked back inside, handed the man cash and other items, which he placed into a blue carrier bag before leaving the premises.
The offender is described as a white male, around 5ft 6ins tall and of a stocky build.
He was wearing a dark jacket, which was below his knees, and grey tracksuit bottoms.
He was wearing blue latex gloves and carrying a blue carrier bag.
He is not believed to have spoken with a local accent.
A blue coloured Citroen Picasso VRM, registration FX** *ZG pulled onto the forecourt of the station at around 4.10am - a person got out of the vehicle, purchased some cigarettes and then drove away. Police would like to speak to the occupants of the vehicle as they may be a witness.
Detective Superintendent Bob Clark said: “We are taking this offence extremely seriously and have a team of detectives who are dedicated to this investigation, in an attempt to identify the individual concerned at the earliest opportunity.
“At the same time as appealing for information, I would also like to take the opportunity to ask for increased vigilance and appropriate crime prevention measures from members of the public and local businesses within North Lincolnshire in light of this and other recent offences.
“I am sure that somebody out there knows who is responsible for this offence and I would urge anyone with information to come forward as a matter of urgency. You do not have to speak to the police, you can call Crimestoppers anonymously and leave as much or as little information as you know. We need to bring this offender to justice and stop him causing upset to people working in our community.
“I believe that members of the public can help us with this.”
If you have any information on this incident call Humberside Police on 101 quoting BN/2030281/2014 or call Crimestoppers anonymously on 0800 555 111.