Sinn Féin MP Francie Molloy was forced into an embarrassing apology over a tweet he sent about IRA abuse victim Paudie McGahon.
Mr Molloy apologised for "any offence" caused by a tweet he sent on Tuesday night, in which he described abuse allegations by Paudie McGahon as "rubbish".
The tweet, which was later deleted, was sent as the Irish Independent published and the BBC broadcast Mr McGahon's allegations.
Mr Molloy's tweet said: "Another load of rubbish on spotlight tonight. Joint Indo bluesh... production".
Last night Mr McGahon said he would never forgive the MP for the abusive tweet.
"The sad part is the cronies of Sinn Féin having such negative thoughts and the comments from Francie Molloy were very hurtful - he can apologise 24 hours a day but he can never take it back," said Mr McGahon.
Another IRA abuse victim, Mairia Cahill described Mr Molloy's tweet as an "insensitive, crass and vile statement".
Ms Cahill said the attempts to attack Mr McGahon even before the BBC Spotlight programme aired was disgraceful.
In a statement, Mr Molloy said: "I apologise for any offence my post caused to Paudie McGahon or any victim of abuse.
"I hope that justice is served and the appropriate support delivered to Mr McGahon," he said.
Mr Molloy added: "There is currently a garda investigation into these allegations. These matters are best dealt with in the justice system rather than trial by television and it is my hope that justice will be done."