A gang of men walked into a town centre phone shop and calmly grabbed a number of phones before running away.
The raiders hit the branch of Carphone Warehouse in the Belvoir Shopping Centre, Coalville shortly before midday on Sunday, May 12.
Detectives have released a CCTV image of four men they hope to trace and question in connection with the thefts.
In a statement issued along with the CCTV image, Leicestershire Police said: "No-one was injured in the incident and no weapons were reported to have been used.
How to deal with the law-breakers
"Inquires have been ongoing and officers are appealing to the men pictured, or anyone who recognises them, to come forward as it is believed they can help with the investigation."
Contact Leicestershire Police on 101.
