One man has been released, while three men and one woman remain in custody
Gardaí are continuing to question four people arrested after the seizure of €1.7 million in cash.
Yesterday's cash seizures came during a series of searches in Dublin and Wexford by gardaí targeting organised crime.
The cash seized is believed to be linked to the Kinahan cartel.
Three men - aged aged 29, 38 and 47 - were arrested after the first searches in Wexford yesterday morning.
A 44-year-old man, meanwhile, was detained following further searches in the town yesterday evening.
They were all questioned on suspicion of money laundering offences.
Today, gardaí confirmed a 39-year-old woman has also been arrested in connection with the Wexford seizure.
One of the men has now been released, and a file is being prepared for the DPP.
The other four people remain in custody.
After earlier suggesting €1.2 million was seized across the three searches yesterday, gardaí have since upgraded that estimate to €1.7 million.
John O'Driscoll, Assistant Commissioner of Special Crime Operations, explained: "Any seizure of cash is significant - but when it's related to quantities of cash of the nature that were seized [on Saturday], obviously it's clear that we're dealing with the proceeds of organised crime gangs that are heavily involved in criminality.
"Criminality is to make money - so any success in terms of taking the money away from criminal gangs is an effective way of dealing with them."