Northamptonshire Police, investigating a string of allegations including fraud and money laundering, have arrested three men.
The trio, all from Irchester and one of two women from Raunds, have been released on bail pending further enquiries.
The arrests came as Northamptonshire County Council Trading Standards in conjunction with Northamptonshire Police and supported by the East Midlands Government Agency Intelligence Network (GAIN) investigated a series of rogue trading offences between April 2013 and November 2015 across Northamptonshire, Lincolnshire, Leicestershire, Bedfordshire, Cambridgeshire and Norfolk.
Warrants were executed at three locations in Northamptonshire, with additional support from the East Midlands Operational Support Service (EMOpSS) and the National Crime Agency.
Officers from Her Majesty s Revenue and Customs (HMRC) and Department of Work and Pensions (DWP) were also in attendance.
An emaciated dog was also recovered from one of the premises which was seized by the RSPCA who will interview the owner in relation to neglect.
The three men and one of the woman, from Raunds, were bailed pending further inquiries.
Officials say, if you’re concerned about a caller at your door or suspect rogue traders are operating in your community, contact the Doorstep crime Action Network (DAN) on 0345 23 07 702 or the Citizens Advice Consumer Service on 03454 04 05 06. If a crime is in progress, dial 999.