Recording of an episode of Vincent Browne's People's Debate was halted last night amid angry scenes at Clontarf Castle.
Gardaí have confirmed they were called to venue as they were told an anti-water charges protest was taking place, but there was "nothing to report" from the incident.
The call-out followed allegations of intimidating behaviour by protestors.
The Vincent Brown team were at Clontarf Castle to pre-record a People's Debate for the station.
When the debate got underway, it is understood exchanges between anti-water charge protesters and politicians got heated.
Video via Dublin Says No on Youtube
Junior minister Aodhan Ó Riordáin, who took part in the debate, described the events as "nasty stuff".
However, Jobs Minister, Fine Gael's Richard Bruton was also taking part and says he wasn't put out by the events.
The Dublin Bay North debate was to mark the return of the series after a hiatus.
Tickets were not required and TV3 invited all members of the public to attend the castle.
That policy was recently announced at the station's launch for its Autumn schedule.
Management said they wanted to improve engagement between members of the public and their panellists.
Labour TD Aodhán Ó Ríordáin was one of those booked to speak at the debate.
Deputy Ó Ríordáin tweeted after the debate ended:
Just out of @vincentbrowne #vinb debate circus. Others can tell you what happened. Nasty stuff. Delighted with Ireland result though.
— Aodhán Ó Ríordáin TD (@AodhanORiordain) September 7, 2015
Others tried to capitalise on the upset:
Bruising stuff at #vinb last night. Govt (& @labour esp) roasted. Real & very vocal anger re water charges, homelessness & soc welfare cuts.
— RENUA Dublin Bay Nth (@RenuaDBN) September 8, 2015
KFM broadcaster Shane Beatty was at the event to participate in a panel discussion:
Great fun monitoring the tweets for #vinb tonight! Couldn't begin to sum them all up
— Shane Beatty (@ShaneBeattyKFM) September 7, 2015
The debate is scheduled to be broadcast at 10 O'clock on Wednesday evening.
