The incident occurred on Monday.
A man has been arrested after a Luas worker was injured in a pepper spray attack on Monday afternoon.
The incident happened on the Luas Red Line at Suir Road in Dublin 12 at around 1.40pm.
Gardaí have said that a member of Luas security staff was assaulted by a man with an "incapacitant spray" during the incident.
Gardaí have arrested a man, aged in his 20s, in relation to the incident.
Investigations are ongoing.
LUAS has not yet made an official comment or response.
