Gardaí are making "very good progress" identifying people involved in a fight that culminated in the fatal stabbing of a man in Dublin city centre yesterday morning, according to the Minister for Justice.
The 34-year-old man who was stabbed on South Anne Street has been named locally as Quam Babatunde.
In a message to residents of the Ballyogan IPAS accommodation centre, management said he was among the first IPAS residents who were accommodated there.
Footage of attack where person seen carrying a knife
It said: "In light of this sad event, anyone who has been affected, IPAS has put in place support for both residents and staff to be able to get through this difficult time.
"Our sincere condolences go out to his friends and family and anyone who knew him in Ballyogan."
It is understood the incident occurred following a row between two groups of people out socialising.
'Disgusting' incident
Speaking on RTÉ's This Week, Mr O'Callaghan said that people are "not allowed to carry knives in Ireland," adding that yesterday’s incident was "disgusting".
"We're not going to allow ourselves to develop into a society where young men are carrying knives and it's completely unacceptable," he said.
"Carrying knives and acts of violence on the street are not acceptable in Ireland."
Gardaí were alerted to the incident after 3am and Mr Babatunde was found unresponsive and with serious injuries.
He was treated at the scene before being taken to St James's Hospital where he was later pronounced dead.
A second man who was injured in the violence on South Anne Street, has been released from hospital.
The man who is aged in his 30s, was being treated for non-life threatening injuries.
It is understood he had sustained a fractured cheek bone.
'Row developed onto street'
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The minister said people were in a nightclub and "a row developed out onto the street" following which "the fatality and violence occurred".
"The people involved need to know that they'll be tracked down by An Garda Síochána and brought to justice," he said, adding gardaí have "excellent" CCTV footage of the incident.
"That type of violence is unacceptable in this city and in this country and the people involved in this will be brought to justice," he added.
The Movement of Asylum Seekers in Ireland (MASI) has described the fatal stabbing as "shocking."
"The whole community of the international protection applicants are in shock at the moment when I shared the news with the guys in the groups, everybody's just crying," said Lucky Khambule, co-founder of MASI.
"It's shocking news...and firstly I just want to offer our condolences to his family and his friends."
Mr Khambule said he had spoken to some of residents who lived with Mr Babatunde at the
Ballyogan IPAS accommodation centre.
"I spoke to one of the guys in the centre there. And he could not contain himself ... he was shocked.
"Apparently this guy was just a jovial guy laughing with everybody, laughing with their friends so they feel that, that shock of of losing somebody.
Mr Khambule said action had to be taken to tackle knife crime.
" Something has to be done to eradicate this lawlessness...holding knives....just flinging knives everywhere in this city in front of everybody.
"A knife is a very dangerous weapon."
Additional reporting: Eleanor Burnhill, Joan O'Sullivan