An Irish man attacked before last night's Liverpool match remains in a critical condition in hospital.
He was with his brother when he was assaulted outside a pub in Anfield shortly after half seven.
Witnesses say the 53-year-old - who has been named as Sean Cox from Co Meath - was hit with a belt.
Paramedics who were called to treat the victim believe he suffered head injuries.
He was taken to the Walton Neurological Centre where his condition is described as critical.
Police arrested two Italian men inside the stadium during the game on suspicion of attempted murder.
Today they're examining CCTV and appealing for witnesses.
Mr Cox's GAA club in Dunboyne has issued a statement, saying: "Sean is a long serving and popular member of St Peter’s GAA Club in Dunboyne.
"At this point we hope that Sean is receiving all of the medical care he requires and that he makes a full and speedy recovery. Our thoughts and prayers are with Sean and his family, and we hope that they get the privacy and space they need."
Liverpool FC has released this statement:
Liverpool Football Club is shocked and appalled after a Liverpool supporter was left in a critical condition having been attacked prior to the Champions League fixture against AS Roma.
Our thoughts, in the first instance, are with the victim and his family at this very traumatic time. We will be offering them our full support.
The club has been liaising with the emergency services since the incident occurred and will continue to do so.
Liverpool FC directs supporters and those in attendance at the game to Merseyside Police’s appeal for information.
UEFA says it's shocked by the 'vile attack, while ROMA Football Club says it condemns the 'abhorrent behaviour' of some fans involved in clashes outside the Liverpool grounds.