After his tragic death, tributes poured out for Fionntán McGarvey.
The 18-year-old was allegedly attacked outside licensed premises in the Finaghy Road North area of Belfast in the early hours of December 27 last year.
He died in hospital on Thursday and police launched a murder investigation.
A 21-year-old man who had been arrested for questioning was released Thursday night after being arrested earlier in the day.
Fionntán was a member of the under-20 and senior football committees at St Brigids GAC in South Belfast and also played for Queens University Belfast GAA.
St Brigids GAC said: “It is with sadness that we announce the death of Fionntan McGarvey, a member of our Under-20 and Senior Football Committee.
“The club sends its condolences to Fionntan’s parents, Lorcan and Aveen, his brothers Caolan and Daire and his sister Sorcha.”
Queens GAA wrote: “It is with deep sadness that we learned this morning of the passing of Fionntan McGarvey, one of our Fresher players.
“We extend our deepest condolences and prayers to Fionntan’s friends, teammates and family at this most difficult time. Ar dheis Dé go raibh a anam.”
A barber from Belfast tweeted: “It is with great sadness that we learn of the sudden death of our client and friend Fionntán McGarvey.
“We offer our condolences and pray that his parents, Lorcan & Aveen, his brothers, sister and family members find strength in the days and weeks to come. Rest in peace.”
Fionntán’s former school said: “The school community at Rathmore is deeply saddened by the tragic and unexpected death of our former student Fionntan McGarvey.
“Fionntan was an excellent and very popular student who took a full part in school life and most importantly enjoyed Gaelic sports and football.”
Kickhams GAC wrote: Everyone at Kickhams Creggan would like to offer our sincere condolences to our compatriot Fionntan McGarvey. Our thoughts and prayers are with his family, friends and everyone at @Naomhbridclg.
In a statement, the teenager’s family said: “We are devastated to lose our beautiful son Fionntan but take comfort in the fact that his desire to donate his organs will bring hope to other families in our time of profound loss.
“The family is grateful for the many messages of sympathy and support we have received. We ask for privacy at this most difficult time.”
Detective Chief Inspector Raymond Phelan has urged anyone with information that could assist police to come forward.
“I know there were a large number of people in the area at the time and I urge anyone who witnessed the attack or has any information to come forward,” he said.