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.
The union flag will be raised at dawn over Belfast City Hall for the first time since the dispute began last month.
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
Belfast city centre has been sealed off as experts examine a fire bomb believed to have ignited at a shop in the busy shopping district, just a few hundred metres from the site of a blast on Friday night.
Christmas party goers were forced to evacuate busy bars and restaurants on Friday, after a sports bag with a small explosive inside ignited on the pavement in the city's Cathedral Quarter.
"We are advising city centre businesses to check their premises for any suspicious objects," a police spokesperson said.
The escalation by extremists opposed to the peace process has also included posting letter bombs to senior police commanders and Northern Ireland Secretary Theresa Villiers.
Police have stepped up their presence since masked men forced a terrified driver to bring a bomb into a Belfast city centre car park in November.
A fire bomb is believed to have ignited at a Belfast shop in the latest attack on the city's commercial heart.
"Cornmarket in Belfast city centre has been closed following an incident at around 6.40 pm this evening when a suspected incendiary device was left at a shop," a police spokesman said.