PSNI officers have released unconditionally, a man whom they have been questioning in connection with the murder of Robert McCartney.
The man was questioned after he presented himself at Musgrave police station in Belfast city centre accompanied by his solicitor.
Mr McCartney was stabbed and beaten outside a bar in Belfast on 30 January.
Earlier, Mr McCartney's family welcomed the news that three members of the IRA have been expelled. The family also called for those involved in the incident that led to Mr McCartney's death to hand themselves in.
The family challenged the version of events given by the IRA and insisted that members of the Provisionals and others, regardless of their role, should allow themselves to be charged, tried and convicted in a trial.
Last night the IRA issued a statement in which it said three people were expelled from its ranks following an investigation.
It added that one of these had already gone to a solicitor and made a statement about his actions.
The statement concluded that the other two had been advised, in the strongest terms possible, to come forward and take responsibility for their actions, as the McCartney family had asked.
Adams prepared to testify
Sinn Féin President Gerry Adams has said he would be prepared to give evidence in any court case that was brought against the killers of Mr McCartney.
Mr Adams also said that since Sinn Féin had issued its appeal for witnesses to come forward, 30 people had responded.
He welcomed the IRA statement as a 'positive development'. He said that had he been in the Belfast bar on Sunday night, 30 January, and had got caught up in the events that followed, then he would make himself available to the courts.
Mr Adams went on to say that the people who are most outraged about what has happened - apart from Mr McCartney's family and close friends - are people like himself and other republicans who feel let down and want these people to redeem themselves and meet the family.
