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.
Police were attacked for a third night, with frontline officers reportedly coming under gunfire as new loyalist trouble erupted in Belfast.
The Union flag is set to fly over Belfast's City Hall today to mark a royal birthday. Loyalists are expected to stage a protest as the flag is hoisted for the second time since city councillors voted to restrict the number of days it can be raised to 18.
The flag will be raised to mark the 48th birthday of the Earl of Wessex's wife Sophie.Last night a man and two teenage boys were arrested in east Belfast during protests over the flag controversy.
The 30-year-old man was arrested on the lower Newtownards Road on suspicion of disorderly behaviour and provocative conduct. Earlier there was a heavy police presence as hundreds of people attended a peaceful demonstration at the city hall.
A man and two teenagers have been arrested in Belfast during protests over the Union flag controversy.
The PSNI said a 30-year-old man was arrested in east Belfast on suspicion of disorderly behaviour and provocative conduct.
Two teenagers, aged 15 and 18, were also detained on suspicion of riotous assembly.
The protests in east Belfast have ended and all roads have reopened to traffic.
Protests are ongoing in Belfast over restrictions placed on the flying of the Union flag at City Hall, but ITV News staff on the ground report that the situation in Carrickfergus is currently peaceful.
There is a crowd of loyalists outside Belfast City Hall marching against restrictions placed on the flying of the Union flag on the building.
ITV News staff on the ground report that the crowd is smaller than it was at this time last weekend and that there is a large police presence.
There is a significant police operation to maintain control over a protest march in Belfast over the flying of the Union flag at Belfast City Hall.
Demonstrators are still in east Belfast and are not being allowed near the scene of last week's violence.
BBC Television and Radio presenter Stephen Nolan could be targeted in the Belfast flag protests by loyalists planning to stage a protest outside BBC offices.
Protesters have been using social media sites to organise a picket outside the Blackstaff studios while the Stephen Nolan television show is being filmed tonight.
They claim to be unhappy with some of the material that has been broadcast by the corporation.
Police later said a 17-year-old was arrested during the east Belfast trouble. Two other men, aged 70 and 26 were detained in a separate incident connected to disorder which followed a flag protest in the Great Victoria Street area.
The Police Service of Northern Ireland (PSNI) Chief Constable revealed his commanders on the ground were revising their tactics, but said sweeping protesters off the streets was not a realistic option:
Even when the PSNI was 12,000 strong it would not have been possible to take such a rigid approach towards protests. Our approach has always been to be measured and responsible.
We have simply to put public safety first.
A driver was injured when rioting loyalists hijacked two buses in a new outbreak of violence in east Belfast tonight.
Police were attacked with stones and bottles and petrol bombs thrown at houses and a church in the neighbouring Catholic Short Strand district where people attending a special needs meeting fled in terror.
The driver was believed hurt by flying glass when a brick was thrown through his window in the lower Newtownards Road area.
Secretary of State for Northern Ireland Theresa Villiers has said there are no circumstances in which British troops will be back on the streets of Belfast.