The Vintners Federation of Ireland has previously voiced concern about the thefts.
Spokesperson Brian Foley said: “Given the high value of kegs, we always remind publicans to keep stock in a secure well-lit area with adequate surveillance.
Investigators believe the suspect was part of a gang who used a white Ford Transit and a Volkswagen Passat during the raid.
Although two men were later arrested by detectives, they were later released pending a file to the Director of Public Prosecutions.
Gardai believe the kegs are being stolen before being stripped and sold in the stolen metal trade.
But there are also fears they are selling ten kegs to bar owners at a time for €400.
