A sledgehammer and electronic devices worth around €50,000 were recovered from a car which was stopped by gardai a short time after a burglary.
Five men were arrested by gardai attached to Monaghan Garda Station and are expected to appear before a district court this morning.
Gardai were alerted to a burglary at a shop at Church Square in Monaghan town early on Saturday morning.
They arrived at the scene and found the shop front damaged and a large amount of property had been taken.
After a follow-up search, gardai stopped a car on the N2 a short time later, and five men travelling in the car were arrested.
A sledgehammer and all the stolen property from the shop were recovered, including electronic devices with an estimated value of €50,000.
The five men, aged between 19 and 30, were arrested and taken to Monaghan Garda Station where they were detained under Section 4, Criminal Justice Act, 1984.
One man was being detained last night at Carrickmacross Garda Station.
Gardai said that a series of follow-up searches had taken place yesterday in Dublin's city centre and in Kildare.
The statement said that investigations are continuing.
Local Independent councillor Paudge Connolly told the Herald that he wanted to commend An Garda Siochana in relation to the incident.
"Excellent work was done by the gardai," he said.
Meanwhile, in a separate incident, gardai in Longford are appealing for information over two separate shooting incidents at a residence in Corboy, Edgeworthstown, Co Longford, last Tuesday at around 10.30pm and on Friday at 12.10pm.
In the first incident, two shots were discharged, and in the second incident, a single shot was discharged.
No injuries were reported in the incidents.
Garda in Granard are asking roads users with dash-cam footage and anyone with information and who may have been in the Corboy area or surrounding area to contact them on 043-668 7667.