Fresh calls were made yesterday for a full Dáil debate into security force collusion in paramilitary attacks at the height of the Troubles.
At a wreath-laying ceremony commemorating the 33rd anniversary of the Dublin and Monaghan bombings, campaigners said they would be calling for a debate as soon as a new government was installed.
The names of the 34 victims, including an unborn baby, were read out at the small gathering in central Dublin, also attended by a number of general election candidates who have supported the campaign.
"As soon as the new government is installed, we will be requesting that a full debate on collusion be held in both Houses into all cross-Border attacks in the 1970s as recommended by the Joint Oireachtas Committee on Justice last November, which the outgoing Taoiseach has committed to holding," chairman of Justice for the Forgotten Kevin O'Loughlin said. "We want to send out the message loud and clear on this 33rd anniversary that our campaign for truth and justice will continue until our aims are achieved."
In May 1974, three no-warning car bombs exploded in central Dublin, killing 26 people with hundreds more injured.
Just over an hour later, a fourth car bomb exploded in Monaghan town, where a further seven people died.
The Dublin victims included a heavily pregnant woman and at a subsequent inquest her child was recognised as the 34th victim of the attacks.
At a short ceremony at a memorial statue on Talbot Street yesterday in Dublin's city centre a minute's silence was offered for victims.
Relatives also laid wreaths and flowers to mark the occasion.
Among those present was 82-year-old Maura Fay from Artane. She lost her husband Patrick, an issuing officer with the Department of Posts and Telegraphs, in the 1974 Dublin bombing.
"It's a terrible day. After 33 years I don't know anything. There's no sign of anything coming out of this," she said.
"It's just awful upsetting for me. It brings back everything. I will never forget that day."
Relatives also laid wreaths at the Sackville Place memorial to the victims of the 1972 and 1973 bombings, before attending an anniversary Mass in St Mary's Pro Cathedral.
Green Party leader Trevor Sargent, who attended the event, described it as a day of personal reflection for the relatives. "This was a devastating, gut-wrenching event which has never been properly investigated," he said.
"It is a scandal which is hurting almost as much as the loss itself."
Sinn Féin's Mary Lou McDonald, the Green Party's Patricia McKenna, Labour's Joe Costello and Independent TD Tony Gregory also attended.