A crime gang stole a large number of valuable bicycles from a shop in Higham Ferrers.
AJ Cycles in Bury Close, Higham Ferrers, was broken into some time between 9.45pm on Saturday, May 30, and the early hours of the following morning.
A total of 40 valuable carbon fibre bikes were taken from the building.
All of the bikes were either Giant, Trek or Specialized models and a number of pieces of Endura, Pearl and Izumi items of clothing were also stolen.
To get into the building, the thieves blocked off a public footpath with security fencing, erected a screen to shield their activities then demolished a breeze block wall.
DC Billy Roberts, who is leading the investigation, said: “We believe an organised gang was responsible for this theft because it would clearly have taken a deal of planning.
“We hope now that anybody who saw these people, or their vehicles, in the area at the time will come forward.
“Similarly, we would ask anyone who is offered high end carbon fibre bicycles for sale in unusual circumstances to contact us.”
It is believed the thieves were all wearing high-visibilty clothing when they broke into the building.
Either a large van or a lorry would have been used to take away the bicycles.
Witnesses, or anyone who knows anything about this incident, can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111.