Boxing coach Pete Taylor is seeking a High Court injunction preventing Wicklow County Council from evicting him and Bray Boxing Club from the premises it has used for 15 years.
Mr Taylor, who is the father of Olympic and World Champion boxer Katie Taylor, claims the council is illegally and wrongfully trying to remove him and the club from the Harbour Shed in the town. The council owns the premises.
The claim was brought after the council allegedly changed the locks in June 2018 after three people, including Mr Taylor, were shot at the gym. One of those shot, Bobby Messett, was killed in the incident.
Mr Taylor, the club and its members, have been out of the facility since then.
On Friday, Richard Kean SC, for Mr Taylor and the club, told the court that in 2005 Mr Taylor secured the use of the premises, which had been used as a store shed by the local authority, for use as a boxing gym.
When it was taken over, it lacked basic facilities. Over the years the club, which has produced some top boxers including Ms Taylor, has enhanced and equipped it with the help of a sports capital grant.
In a sworn statement, Mr Taylor said in 2017 the council sought a large increase in the annual rent it charged for the premises, which he thought was unfair given the facility's benefit to the local community.
The court heard that Mr Taylor was "the innocent victim of a violent incident" in the June 2018 attack. A few days later it is claimed that without prior warning the council changed the locks at the premises.
It is also claimed that the council informed the club that it proposed to take possession of it and have it cleaned, fixed and restored for use as a sports' facility.
Mr Taylor claims that the council used that violent incident as a "smokescreen to unlawfully evict" him and the club from the premises.
He says that it was always his intention to return and operate the club as previously and the council was not entitled to retake the property in the manner in which it has done for many years.
Despite attempts to resolve matters, the plaintiffs say they have been unable to regain entry to the property and several club members have had to make alternative arrangements.
Arising out of the council's alleged actions, Mr Taylor and the club, of which he is a director, sued the council.
Those proceedings are ongoing and are due before the High Court later this month where his clients seek judgement against the council in default over its alleged failure filing a defence to the claim.
Earlier this month Mr Taylor said he discovered that the council had posted an eviction notice outside the premises giving the club and Mr Taylor 10 days to vacate the premises.