A 22-year-old man is currently being questioned by police concerning the incident
Gerda Visinskaite took to Facebook, speaking of her boyfriend, Jake Bailey-Sloan (23), who passed away after the incident, with a murder investigation now taking place.
She wrote: ‘I am in one million pieces. There are no words. I love you forever and ever Jake.’
Mr Bailey-Sloan, a member of Portadown Rugby Club, studied engineering at Queen’s University, opening his own outdoor pursuits business in the County Armagh town, called The Mill, when he was 19 years old.
The PSNI are currently questioning a 22-year-old man on suspicion of murder regarding the incident at the weekend.
DUP councillor Paul Berry paid tribute to Mr Bailey-Sloane, who he knew personally.
He said: “I am totally shocked and devastated to learn of the sad and untimely passing of Jake.
"I had the pleasure like so many of knowing him and he was such a really good guy who always looked out for others, he was caring, thoughtful and all round really good guy.
“I remember when he came to meet me over a coffee when he shared with me his vision for developing The Mill a few years ago and seeking help and advice on planning issues etc.
“He was bursting with energy and enthusiasm and the development was a real legacy to him.
“Our thoughts and prayers are with the whole family circle at this tragic and sorrowful time.”
Police say Mr Bailey-Sloane was attacked at the corner of Mandeville Street and West Street in the town at around 1.40am on Sunday.
In a statement, a spokesperson said: “A short time after the assault occurred, it was reported that the man had fallen in the street and was taken by ambulance to hospital.
“From CCTV footage of the scene at the time of the incident, we can see that there were a large number of pedestrians and motorists in the area.
“I would appeal to anyone who witnessed the assault or who has dash-cam footage from the scene which could assist with our investigation to contact detectives at Lurgan on 101, quoting reference number 569 17/10/21.”