Three men have been arrested following the seizure of €1.6million worth of drugs and €700,000 in cash after searches in Co Dublin and Co Meath.
A Dutch man, 43, in possession of €200,000 in cash was arrested in Dublin 4 on Thursday.
Follow up searches in the area later that day discovered a sum of cash believed to be higher than €500,000.
The suspect is being quizzed at Irishtown Garda Station on suspicion of money laundering offences.
As well on Thursday, an operation led by Garda National Drugs and Organised Crime Bureau intercepted a vehicle in the Kilinarden area of Tallaght.
Officers discovered a large amount of heroin and cocaine in the vehicle and arrested a 24-year-old man - the sole occupant of the car - on suspicion of possession of controlled drugs.
Subsequent searches in Ashbourne and Rathoath in Co Meath resulted in the seizure of heroin and cocaine believed to be worth €1.6million.
Gardai carrying out the intelligence led operation were targeting similar individuals in organised crime in the Dublin Metropolitan Region and in Co Meath.
And on Friday, a 40-year-old Irishman was arrested in Dundalk, Co Louth in relation to a suspected breach of the provisions of the Passport Act.
Officers with the Garda National Bureau of Criminal Investigation, which target suspects who operate on an international level, made the arrest.
He remains in custody at Dundalk Garda station.
Assistant Commissioner John O’Driscoll, head of Special Crime Operations (SCO), said recent results represents "significant success" in tackling organised crime.
He said: "The operational activity undertaken by the Garda National Drugs & Organised Crime Bureau, in the first month of 2020, has resulted in the seizure of ten firearms accompanied by 2,000 rounds of ammunition; over €600,000 in cash and drugs to an estimated value of €1.6 million.
"The results to date in 2020, represents significant success achieved in tackling organised crime and another step in pursuing our ambition to dismantle those organised crime groups that are causing harm within our communities."
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