Mr Colm Murphy, whose conviction for his alleged role in the Omagh bomb was quashed last week, walked free from court this afternoon.
Mr Murphy (52), of Ravensdale, Dundalk, Co Louth, posted bail totalling of €50,000 at Dublin's Special Criminal Court to secure his release after two years behind bars.
His conviction in connection with the 1998 bombing that killed 29 people and two unborn babies was overturned by three appeal court judges last Friday.
He left court with another man refusing to answer questions from the
media. Journalists followed the pair several hundred yards from the court before they disappeared into a nearby pub.
Outside the bar Mr Murphy's daughter, Leonora, who posted bail on his behalf, read a statement to the media: "We are delighted with our father coming home today. It's been a nightmare for all of our families for the last six years.
"Our hearts go out to the people of Omagh who have lost their loved ones. It was a terrible atrocity which should never have happened but also one that destroyed my father's life."
"We are grateful and pleased that the courts have recognised the terrible miscarriage of justice and we will not stop until our father's name has been completely cleared," she said.
The Court of Criminal Appeal ruled last Friday that Mr Murphy's conviction was unsafe and ordered a retrial.
The three judges granted Murphy bail on two independent sureties of €25,000. Mr Murphy's sister, Ms Kathleen Tully, who lives in Co Armagh, and Mr Murphy's daughter, Leonora, who also lives in Ravensdale, provided one of the sureties each.
Mr Murphy has surrendered his passport, must sign on daily at Dundalk Garda Station and must reside at a named address at Mount Pleasant, Dundalk, under the bail conditions.