Gardaí are continuing to question a man this morning in connection with a post office raid in Cavan yesterday afternoon.
An armed gang escaped with an undisclosed sum of cash in the robbery.
One man was subsequently arrested in the Cavan area, while gardaí set up roadblocks in an effort to intercept the getaway car.
The PSNI was also asked to help search for the raiders.
Nobody was injured during the robbery.