A sledgehammer and electronic devices worth around €50,000 were recovered from a car which was stopped by gardaí a short time after a burglary.
Five men were arrested by gardaí attached to Monaghan garda station, and are expected to appear before a district court this morning.
Gardaí were alerted to a burglary at a shop premises at Church Square in Monaghan town in the early hours of Saturday morning.
They arrived at the scene and found the shop front damaged and a large amount of property had been taken.
A follow-up search was conducted and gardaí stopped a car on the N2 a short time later and five men in the car were arrested.
Gardaí said a sledgehammer was found in the car and all the stolen property from the shop, which was electronic devices with an estimated value of €50,000.
The five men, who range in age from 19 to 30, were arrested and taken to Monaghan garda station where they were detained under Section 4, Criminal Justice Act, 1984.
One man being was detained last night at Carrickmacross garda station.
Gardaí said that a number of follow-up searches took place yesterday in Dublin city centre and Kildare.