The man in his 20s was arrested on Friday and is currently being detained at a Garda station in the Southern Region.

Fianna Fáil’s Ryan O’Meara said he had contacted the gardaí about the incident.

Riona Molony officially announced the Molony family’s decision to retire from racing at the Tipperary track.

Gardaí said the scene is currently being preserved for technical examination and investigations are ongoing.

The man is due to appear before Nenagh District Court on Thursday.

Gardaí are appealing for witnesses.