The pub was targeted using petrol bombs in the early hours of January 13.
After the attack had concluded, a spokesperson for the Black Forge Inn released a statement.
"After hours last night it appears that criminals made an unprovoked effort to inflict damage to the Black Forge Inn.
"There was no damage done to any patrons, employees or the Forge and Mr McGregor was not on the premises at the time of the incident.
"The Gardai (the national service of the Republic of Ireland) have opened an investigation into the event. We are open and busy as always."
Since the break-in, McGregor had recently posted on Instagram in an attempt to gain any information possible.
The post read: "Hey guys! I have a 50k reward cash all in 100 crisp untouched notes. Not a wrinkle on them. The no wrinkle green backs.
"I call them yum-yums. For whoever tells us who this little deli-chicken head is. The walk, run, and scrawny build all very distinctive.
"Nothing will be said, but done. Reach out to who came reach me. Look forward to doing business,"
The caption accompanied with CCTV footage of the break-in was soon deleted however and replaced with a message on his story saying 'wow, that was a quick one. Thank you so much good Samaritan'.
Despite there being no official named suspects yet, there have been many reports of two men heading towards the pub on scooters before the attack took place.
The Irishman bought the pub in 2019 for roughly €2million, with the grand opening of the boozer coming in July of 2021.
For McGregor, the Black Forge Inn was just another asset adding to his ever-growing business empire, one which saw him sell shares of his whiskey brand - Proper No. Twelve - to Proximo Spirits for a staggering $600million last year.
The self-proclaimed 'Notorious' made his first lot of millions fighting in the UFC where he took part in many record-breaking nights such as his wins against Jose Aldo, Eddie Alvarez, and Nate Diaz.
Despite those victories, it will be his loss against long time rival Khabib Nurmagomedov which fans will most likely remember him for, due to the night culminating in a colossal brawl between the fighters and the teams after Khabib's fourth round submission win.
The 33-year-old hasn't stepped foot in the octagon since July of last year after McGregor broke his leg just one round into his trilogy bout with Dustin Poirier.
It is heavily rumoured that the former featherweight and lightweight champion is planning a return to fighting once his leg recovers with a potential bout against the welterweight champion Kamara Usman on the cards.
If true, it would be the first time McGregor would be fighting up at the 170lbs limit since his revenge win against Nate Diaz in the summer of 2016.