The transport company said the service disruption is due to a technical fault at the Four Courts
There is currently no service on the Luas Red Line between Smithfield and The Point.
Earlier the service disruption ran all the way back to Blackhorse in Inchicore - however that now appears to have been reduced.
According to the transport company, the disruption is due to a technical fault at the Four Courts.
There is no immediate information as to when the service will resume.
Luas said all tickets are valid on Dublin Bus for the duration of the outage.