There has been widespread disruption across Northern Ireland on Wednesday as Eleventh Night celebrations got underway.
It comes after the PSNI said that they had information that the UVF were intending to cause serious disorder in east Belfast.
Police urged people not to engage in criminal or violent behaviour and appealed for community representatives to try and prevent trouble but their call appears to have fallen on deaf ears.
Police are currently attending a security alert in Belfast after a number of similar incidents throughout the day.
On Wednesday afternoon police discovered the remnants of what is believed to be a viable pipe bomb type device in Clandeboye Drive.
The PSNI have confirmed that a device has been discovered in Ravenhill Avenue, similar to one found in Clandeboye.
Army Technical Officers are at the scene.
A number of cars have been burned on the Upper Newtownards Road.
It is also understood that a number of cars have been hijacked across Belfast and Dundonald.
Around 7:30pm a bus was hijacked by a group of men in Newtownards and set alight. One man was in possession of a suspected firearm.
There were also reports of a security alert in the area of Belfast City Airport.
Belfast City Airport tweeted at 9.40pm that the airport had reopened and is now fully operational again.
A fire is also blocking the Lecky Road fly-over in the Bogside area of Londonderry after a barricade was set alight. Petrol bombs were thrown at police on the city's walls.
The Northern Ireland Fire and Rescue Service confirmed that in one hour they received 56 emergency calls dealing with 24 incidents including a number of bonfire related incidents and a number of deliberate vehicle fires .
“Police have received information from the community which indicates that the East Belfast UVF intend to orchestrate and participate in serious disorder in east Belfast this evening directed against my officers," Assistant Chief Constable Alan Todd said.
“I would strongly urge people to desist from engaging in any violent or criminal behaviour. I would also appeal to those who have influence in this community to discourage people from taking part in any illegal activity.
“The safety of the public and my officers is of paramount importance and accordingly I will be reviewing my resourcing plans to ensure there is an appropriate and proportionate policing operation in place to deal with any disorder should it occur.”
Big police operation including riot squad on standby in area between the Fountain and the Bogside pic.twitter.com/Mrmacv4mdx— Kevin Sharkey (@tv_KevinSharkey) July 11, 2018
Only in Derry: A taxi man gets out of his car to remove a burning palette thatâs blocking his way, with his bare hands. pic.twitter.com/Yg4iD3qG1t— aoife-grace moore. (@aoifegracemoore) July 11, 2018
Suspect device at Belfast City Airport thought to be an elaborate hoax, road has since reopened and passengers have been allowed to leave the airport in the last few moments-@BelTel pic.twitter.com/pNP5XgakAT— Kevin Scott (@Kscott_94) July 11, 2018
The Rathgill beacon is lit! I wish everyone in Bangor and across Northern Ireland a festive, peaceful and respectful 11th night. pic.twitter.com/colSaY4dEA— Cllr Alistair Cathcart (@AJCathcart) July 11, 2018