Three teenagers – two boys aged 16 and 17 and a 17-year-old girl - have died after an apparent “crush” at a St Patrick’s Day party at the Greenvale Hotel in Cookstown, Co Tyrone.
Large numbers of young people attended the event at the Drum Road venue on Sunday night, with the incident then prompting police to urge parents to collect their children as a matter of urgency.
Officers confirmed on Monday morning that one of the victims had died at the scene and the others in hospital.
Another girl, aged 17, remains in a stable condition in hospital.
The cause of the crush remains unclear.
At a press conference on Monday, PSNI Assistant Chief Constable Mark Hamilton said: “Preliminary investigations show there was a crush towards the front door of the hotel.
“In that crush, people seem to have fallen - we are examining CCTV footage to see if the people who had fallen were the deceased.”
ACC Hamilton added: “There seems to have been struggling going on to get people up off the ground. That might explain why there is a report of some fighting.
“A major investigation team has been appointed to investigate the circumstances of this.”
Police are appealing to all young people who were at the event to “talk through this with your parents and to come and talk to us”.
The Education Authority Youth Service is opening Cookstown Youth Resource Centre from 4pm to 7pm on Monday for anyone that needs support or to just talk about what happened with youth workers.