The brutal killing of Millie Martin was not the first murder that Barry McCarney was involved in.
In some ways the murder of John Mongan in February 2008 was even more horrific than that of the 15-month-old toddler.
A gang of four men smashed their way into Mongan's home on Fallswater Street in West Belfast and hacked the 30-year-old father-of-three to death in front of his heavily pregnant wife with an axe and a sword.
A mobile phone used by one of the alleged killers was tracked from Derry to Belfast and from there to Kesh, where a jeep believed to have been used by the gang was found burnt out a few hours after the murder.
According to a prosecution lawyer McCarney picked up the killers outside Irvinestown and drove them back to Derry.
She made the claim during a bail application by McCarney at Dungannon Court in October 2010.
"Recently he was involved in the murder of a member of the travelling community in a peripheral way," she told District Judge Liam McNally.
She explained that McCarney was asked to transport the killers from Irvinestown to Derry. He did so and afterwards said he realised they were involved in the murder.
The lawyer said the point was that the these people phoned McCarney when they needed help.
She said he had refused to name them and claimed he was in fear.
The Impartial Reporter was told not to publish the allegation at the time for fear it would prejudice McCarney's defence at his subsequent trial for the murder of Millie Martin.
During that trial the jury was told that the child had burnt her finger on a candle.
However, the prosecutor told the earlier bail application that the burn was "consistent with a cigarette burn". McCarney, a smoker, claimed he was with Millie when she held her finger over a candle.
The prosecutor also told the bail hearing that McCarney had convictions for violence and possessing weapons.
She said he was connected to the travelling community across the Border and had links to a number of "prolific criminals".
She expressed concerns that he would interfere with witnesses, including a number who talked about his history of domestic violence, women who had borne him children and provided "highly relevant evidence of his sexual behaviour".
She said his former partners described him as being of a "very aggressive, controlling nature and somebody that is very highly sexed".
The prosecutor told the court McCarney had previously been investigated for domestic violence and was on bail on September 17, 2005, when he went into Irvinestown and damaged a vehicle and the victim withdrew her complaint.
Another bail hearing was told that McCarney was not Millie's father but had three children by two previous partners. A detective constable told the court police were concerned he might cause them harm. She handed in his criminal record and said he had a history of violence. He had assaulted previous partners, but not Millie's mother.
She said her main concern was that he would intimidate and interfere with witnesses. She pointed out that he had previously been charged with assaulting a woman, threatening to kill her and choking her. The victim withdrew her complaint after one of McCarney's relations approached her and said: "No face, no case."
VIDEO: CCTV of baby killer Barry McCarney rushing into the Erne Hospital with fatally injured Millie in his arms. WARNING: You may find the contents of this video upsetting.