A young man has been taken to hospital following an assault in Ballsbridge in Dublin.
The attack took place today at around 11.15am outside the RDS on Simmonscourt Road.
The victim, who is believed to be in his teens, sustained head injuries and has been taken to St Vincent's Hospital.
Gardaí including armed support units arrived at the scene and are now investigating if a row broke out among older school pupils in the area.
The Higher Options Conference for Transition Year, 5th and 6th year students is taking place in the RDS.
Gardaí in Donnybrook are seeking witnesses or anyone with information to contact them.