UTV reporter Marc Mallett has been told by a a consultant from Belfast's Royal Victoria Hospital that the symptoms of those taken to hospital following a major incident at a concert are consistent with 'drugs and alcohol misuse'.
Doctors have been put on standby at the Ulster, Mater and Royal hospitals, in Belfast and total of 15 people have been admitted to hospital. The are 11 people at the Royal and four at the Mater, said to be in a in a stable condition and are being kept overnight, according to UTV.
A Northern Island Ambulance Services spokesman said they dealt with casualties "at varying levels of consciousness".
A number of people involved in the major incident in Belfast tonight were unconscious at the scene and five people were taken to hospital, John McPoland, spokesman for the Northern Ireland Ambulance Service told UTV.
A 'major incident' was declared in Belfast by both the Northern Ireland Ambulance Service and the Ulster Hospital after 60 young people were treated for the effects of drink and drugs, sources told UTV News.
An ambulance spokesman said they are dealing with casualties believed to be suffering ill-effects of alcohol and drugs, at varying levels of consciousness.
A spokesperson for the South Eastern Trust said they were aware of an incident involving a bus at the Odyssey Arena.