Gardaí investigating the fatal stabbing of a 16-year-old boy in Dublin say they are following a definite line of inquiry.

Josh Dunne, a talented soccer player, was stabbed during a row between two groups following the alleged theft of a bicycle in East Wall last night.

Bohemian FC said it was devastated to learn of Josh's death (Courtesy: Bohemian Football Club)

Two others, another 16-year old boy and a man in his 20s, were also seriously injured in the incident and are both being treated in the Mater Hospital.

The scene remained sealed-off for a forensic examination as gardaí used a drone to survey the area.

The series of events that led to Josh's death appears to have begun when a bike was allegedly stolen by a man in his 20s and a number of food delivery cyclists intervened.

A group of teenagers who had come from the city centre to East Wall at around 9.20pm then appear to have got involved in that dispute, which resulted in the two 16-year-old boys being stabbed.

Both teenagers were treated at the scene, but Josh sustained fatal injuries and was pronounced dead later at the Mater Hospital.

The other boy was stabbed in the chest and is in a serious but stable condition in hospital.

A 23-year-old man who was involved in the initial incident also subsequently presented himself at the Mater Hospital and is still being treated there for serious injuries.

Josh, who lived in Ballymun, was a talented underage footballer who played with local clubs including Bohemian FC.

He had a trial for a Scottish Premier League club and interest from a number of English professional clubs.

Bohemian Football Club said it was devastated to learn of the death of the talented and well-liked young footballer.

"We extend our deepest condolences to those former team-mates and coaches, and to all his family, friends and schoolmates."

In a statement, it said: "This is an extremely difficult time for all of Josh's team-mates. The loss of someone so young in such circumstances will be hard for them to comprehend.

"Bohemian Football Club encourages them, or their parents on their behalf, to come forward and seek help if they are struggling. We will do all we can to support our players, past or present."

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Gardaí have begun a murder investigation and say they have spoken to several teenagers and adults who were at the scene.

They are appealing for anyone who was in the East Road, East Wall area between 9pm and 9.40pm and may have any information or footage (including dash cam), to contact Store Street Garda Station on 01 666 8000, the Garda Confidential Line on 1800 666 111 or any garda station.