Four men remain in custody and the investigation is continuing.
Hundreds of sewing machines have been recovered by officers after they were stolen from a lorry in Coalville.
Shortly after 1.30 am today a suspect vehicle activated an automatic number plate recognition (ANPR) camera in Markfield.
The lorry was found unoccupied in a layby in Stephenson Way, Coalville and another lorry – from which the machines were taken – was also found nearby.
Following a search of the area, three men were found by the dogs unit and arrested.
One man was also found by armed response officers.
Detective Sergeant Simon Boden, from Coalville CID, said: “I’d like to thank my colleagues in the dogs section and roads policing and armed response units for their swift action in bringing these men into custody.
“I’m pleased that the sewing machines, which are worth tens of thousands of pounds, have been recovered. Our enquiries into the incident are continuing and I would like to speak to anyone who was travelling along Stephenson Way in the early hours of this morning. I’m particularly keen to speak to any lorry drivers who parked in the layby and who have dashcams installed in their vehicles."
The four men – aged 31, 28, 25 and 18 and all from Doncaster – remain in custody and the investigation is continuing.