The UK Gambling Commission has seized a number of gaming machines in a multi-agency operation based in Oldham, Greater Manchester.
The seizures were made as part of an investigation into the suspected unlawful supply of gaming machines to businesses in the north-west of England.
In an operation involving officers from the commission, Greater Manchester Police and Oldham Metropolitan Borough Council, premises in Chadderton, Oldham, were visited.
It is understood that seven gaming machines were immediately seized, with a further seven machines subsequently being removed from six betting shops in the region.
It is believed that the confiscated machines were being supplied without an operating licence and the commission said it will be continuing its inquiries.