There has been a crash between a Luas tram and a car on the inbound red line.
It happened at the Junction of Queen St and Benburb St.
Gardaií say there are no immediate reports of injuries.
Emergency services are at the scene.
The Luas Red Line is currently only operating from Tallaght/Saggart to Blackhorse following a crash at Queen St pic.twitter.com/JpYhSOaLKd— RTÉ News (@rtenews) May 22, 2015
Luas says trams are running from Saggart/Tallaght to Blackhorse and Smithfield to the Point only due to the incident on the line in the city centre. Luas tickets are also valid on Dublin Bus.
The Luas Green Line is operating normally.