Gaming machines and cash have been seized by detectives investigating money laundering and illegal gambling in Belfast and Lisburn.
Premises in Belfast’s Shaftesbury Square and Lisburn Road were searched, and at Chapel Hill in Lisburn.
More than 100 illegal machines and three casino roulette machines - valued as being worth £100,000 each - were seized along with around £200,000 in cash.
A 63-year-old man from Lurgan was arrested on suspicion of managing and organising illegal gambling and money laundering. He has been released on bail.
DUP Policing Board member Jonathan Craig said the blocking of the full introduction of the National Crime Agency by Sinn Fein and the SDLP is “ridiculous” in light of such criminal activity.
“This is a narrow-minded and disgraceful approach,” Mr Craig said.