Three men were arrested after gardai raided a suspected illicit pill making factory in Co Kildare.
The men, all from eastern Europe, were detained during Sunday’s operation at a house in Celbridge.
Suspected controlled drugs, in powder and pill form, with an estimated street value of €500,000 have been seized.
The Garda National Drugs and Organised Crime Bureau has today dealt another blow to those involved in organised crimeJohn O'Driscoll
An industrial pill making machine was also recovered from the property, as was other equipment such as blenders.
Gardai said the process of making tablets was under way when they forced entry into the premises.
Officers from the Garda National Drugs and Organised Crime Bureau supported by the Special Crime Task Force were involved.
The arrested men, aged from mid 30s to early 40s, have been taken to Leixlip and Lucan Garda stations.
Assistant Commissioner John O’Driscoll, who is in charge of special crime operations in the Garda, said:
“This operation provides further evidence of the extent of links between Irish based organised crime groups and the international drug trade.
“The Garda National Drugs and Organised Crime Bureau has today dealt another blow to those involved in organised crime.
“Our effort in tackling organised crime is unrelenting and will continue as long as is necessary”.