Police say they can't rule out Loyalist paramilitary involvement in eight racist attacks across homes in east Belfast.
23 police officers and an MP were among those injured during a night of fierce violence in Northern Ireland.
Twenty-nine police officers were injured during sectarian riots between republicans and loyalists in east Belfast today.
Two students have said that 'people jumped the barrier' of the standing area of the concert at the Odyssey Arena in Belfast where are least five people have been taken hospital.
2 students from QUB radio said the standing area in the concert was crammed as many seated people jumped the barrier. http://t.co/n4jkGCaequ
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.
BREAKING: statement from odyssey arena re: tonight's major incident outside arena http://t.co/zu3WeKikSe
Ambulances were lined up outside Belfast's Odyssey Arena tonight as both the Northern Ireland Ambulance Service and Ulster Hospital declared a major incident involving around 60 young people.
The youngsters were said to be suffering from the 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 arena.
Emergency services in Belfast are still dealing with a major incident after treating around 60 young people for the effects of drink and drugs outside the city's Odyssey Arena.
Steady stream of concerned parents arriving at Odyssey Arena. Dance event ongoing. Ambulance service still dealing with major incident
Ambulance spokesman says around 60 ppl have been receiving treatment due to effects of drink & drugs. Most treated outside Odyssey Arena
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.
UTV News reporter Mark Mallett has tweeted:
BREAKING: Northern Ireland Ambulance Service declares a "major incident" at Odyssey Arena in Belfast
BREAKING: Amb spokesman: dealing with casualties believed to be suffering ill-effects of alcohol & drugs, at varying levels of consciousness
Incident at Odyssey has been declared as dance event continues inside the Belfast arena. Emergency vehicles on scene http://t.co/KBzspRkEZ9
– Assistant Chief Constable Stephen Martin, Service of Northern Ireland
There is thepotential for flooding in Belfast. Areas identified as high risk at this timeare Sydenham and around the Docks area.
We would ask residents in Sydenham toconsider making preparations for potential flooding in the area.
Agencies are preparing for the possibility of evacuations in flood vulnerable parts of east Belfast - telling residents to be ready
Thousands of sandbags already in place in Sydenham area - PSNI say the concern is that flood defences could be breached