Three people, including a major underworld figure who is involved in the deadly Drogheda feud, remained in garda custody last night after detectives seized €550,000 in cash and €1.1m in drugs.
"Three vehicles, six high-value watches, two encrypted communications devices and two signal-blocking devices were also seized," a garda spokesman said.
The suspects being questioned in Dublin garda stations under anti-gangland laws last night are a woman aged 43 and two men aged 50 and 39.
Among the vehicles seized was a top-of-the range Mercedes while four of the watches were Rolexes.
The trio were arrested when officers intercepted cars in the Donore Road and Dublin Road areas of Drogheda and yesterday armed gardai were involved in follow-up searches in counties Louth, Dublin, Wexford and Meath.
Gardai believe the cash, which was vacuum-packed, was to be brought out of the country while the haul of cocaine and illegal prescription pills was to be distributed among gangs in the capital and north Leinster as well as Border counties.
Like many massive seizures of this kind, sources said the Kinahan cartel is suspected of sourcing the drugs.
Detective Chief Superintendent Angela Willis, of the Garda National Drugs and Organised Crime Bureau, said: "The Bureau continues to pursue those involved in serious and organised crime while restrictions on movement associated with coronavirus are in place, leading to another successful outcome to an operation.
"It involved the seizure of significant quantities of controlled drugs and cash and other property believed to be the proceeds of crime and the arrest of three suspects."
The seizure was one of a number of drugs busts this week including €35,000 of cocaine in Longford and€140,000 of amphetamines and cannabis in Westmeath.