Police are looking for a man with a gun who is wanted in connection with an armed robbery at the BP petrol station on the A18 at Barnetby Top in North Lincolnshire.

Just after 4am on Sunday, a man approached the shop assistant, who was outside on the forecourt sorting out the morning’s papers.

The man, who was carrying a “small black-coloured firearm” and whose face was covered by a black balaclava, asked the assistant to go back into the shop and hand over cash. The shop assistant went back inside, handed the man cash and other items, which he placed into a blue coloured carrier bag, before leaving the premises.

The shop assistant then closed the shop and called police.

Police are looking for a potential witness – the driver of a blue Citroen Picasso (registration FX** *ZG) who pulled onto the forecourt of the petrol station at around 4am on the day of the robbery. A person got out, bought some cigarettes and then drove away.

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.”