Heroin and cocaine with an estimated street value of almost €5m have been seized in Dublin.
Gardaí from the Clondalkin Detective and Drugs Units carried out a search of a premises at the Bluebell Industrial Estate on Tuesday.
They seized 32.5kg of suspected heroin and half a kilogram of suspected cocaine, pending analysis.
The estimated street value of the drugs is €4.9m.
A handgun and ammunition were also seized.
A 39-year-old man, arrested on Monday, in connection with the investigation, is being questioned at Clondalkin Garda Station.
To date, the investigation has led to the seizure of heroin and cocaine with an estimated value of €5.2m, five firearms including three sub-machine guns, ammunition and cash.
A garda spokesperson said: "This is a significant seizure of heroin, which causes terrible damage in communities throughout this country.
"This operation has taken drugs, firearms and ammunition off our streets, which could have caused terrible damage.
"This lengthy operation has caused major disruption to an Irish organised crime gang with international connections and is part of our on-going strategy of targeting criminal gangs."