The operation is part of investigations into a number of gangs operating nationwide.
Over 150 gardaí are currently involved in a search operation in Coolock and Raheny in Dublin, targeting organised crime.
Searches of 39 properties began this morning.
The operation is part of investigations into a number of gangs operating nationwide, that are suspected of being involved in burglaries, drug trafficking, counterfeiting, theft and other property crimes.
Gardaí say the searches are continuing this afternoon.

Sharp Rise In M9 Collisions With Garda Call-Outs Up Year-On-Year
Councillor Seeks Clarity On How Often Nightclubs and Late Bars In Naas Are Inspected For Fire Risks
New Figures From CSO Reveal How Much International Protection Applicants Earn Compared To Average Worker In Ireland
Unpaid Eight-Month Work And Training Placement For Adults With Disabilities Branded "Extremely Unfair"
Department Of Education Defends Kildare SNA Cuts Amid Claims Of Reduced Need At Some Schools
Naas Nurses Threaten Escalation As Staffing Row Deepens
Driving Tests Face Disruption As RSA Testers To Strike Next Week
Jury Delivers Not Guilty By Reason Of Insanity Verdict In Ballyfin Demesne Strangling Case