Police have released CCTV images of a man they are tracing in connection with a suspected armed robbery at a Crowle supermarket.
The incident happened at the Tesco Express store on Wednesday, July 29, between 9.20pm and 9.30pm, when a man wearing a balaclava threatened staff with a knife.
A Humberside Police spokeswoman said: “The suspect approached the store, put on a full face balaclava and approached a female member of staff who was working on the till.
“It is said he then threatened the woman with a two to three inch knife and demanded cash, which she handed over and he left the store.
“It is believed he then turned left into an alley, cut through an open gate and into Cross Street.
“Despite an extensive search by the armed response team and police helicopter, the suspect has not been traced.
“A 35 year-old Crowle man initially arrested in connection with the incident has been released without charge.
“It is thought the man responsible is someone with good knowledge of the local area.”
Detective constable Mark Davey said: “It is a worry that someone is walking into shops with a knife and we really want to catch this guy.
“This is a very serious incident and all of our investigation is being fast-tracked to get to the bottom of who is responsible.
“The route he took from the scene would need local knowledge. It is not someone who thought ‘I’m off somewhere remote’.
“I’d appeal to anyone who knows anything about what happened that night to get in touch.”
Anyone with information is asked to call 101, quoting log number 596 or crime number 2128758.