Update 6.11pm: The Republic of Ireland fan found dead in Copenhagen has been named.
Drogheda United posted a tweet naming him as David Clerkin.
Drogheda United would like to express its deepest sympathies and condolences to the family and friends of David Clerkin who passed away yesterday in Copenhagen.
Ar dheis Dé go raibh a anam dílis— Drogheda United F.C. (@DroghedaUnited) November 19, 2018
Their tweet said: "Drogheda United would like to express its deepest sympathies and condolences to the family and friends of David Clerkin who passed away yesterday in Copenhagen. Ar dheis Dé go raibh a anam dílis."
A minute's silence will be held before tonight's match between Ireland and Denmark for him.
He had travelled there for the match and was found in the city's harbour yesterday morning.
The 30-year-old was later pronounced dead in hospital, but it is not thought to be suspicious.
The FAI says the Irish players will wear black armbands to pay tribute to the supporter and the Minister for Sport, Shane Ross, has said his thoughts are with the man's family and that his death puts sport into perspective.
The FAI has said they are "deeply saddened" to learn of an Irish fan who died in Copenhagen on Sunday.
The 30-year-old was confirmed dead after being found in water at Havnegade in the Danish capital.
The organisation says it has expressed condolences to the man's family and said that Ireland players will wear black armbands in respect of the fan during tonight's Nations League clash with Denmark.
They added that: "An official request has been submitted to UEFA, by the FAI, to hold a minute’s silence before kick-off in tonight's game in Aarhus."
The Football Association of Ireland is deeply saddened to learn of the passing of a Republic of Ireland supporter in Denmark.November 19, 2018
The statement in full reads:
An Irish man has died after being found in water at Havnegade, in Copenhagen, Denmark.
A spokesperson for Copenhagen Police confirmed that the man, 30, was found on Sunday morning and said the incident is not being treated as suspicious.
Copenhagen Police confirmed on their Twitter page that there was "a lifeless man in the water".
They added that the man was found at around 10.30am yesterday and he was brought to hospital after being rescued.
The police force later stated that he was identified as a tourist and that police were "working to determine the course of events".
A spokesperson for the Department of Foreign Affairs said:
"The Department of Foreign Affairs and Trade cannot comment on the details of individuals cases, however, we can confirm we are providing consular assistance to the family of an individual in Copenhagen."
Media reports suggest the man had travelled to Copenhagen for Ireland's Nations League clash with Denmark this evening.