Eighteen people have been arrested after nine police officers were injured during the latest outburst of loyalist violence in Northern Ireland.
More than 30 petrol bombs, along with fireworks, ball bearings and masonry, were hurled at police officers in a sustained attack on officers in east Belfast. Up to 300 people were involved in the disturbances.
None of the police injuries are life threatening, however one female officer required medical treatment at the scene.
Three attempted vehicle hijackings were made in the Beersbridge Road area. A business premises on the O'Neill Road was also broken into by several masked men, who damaged the property and stole a sum of money.
The PSNI said they will be seeking further arrests in the coming days in relation to the disorder and have appealed for witnesses.
Conall McDevitt, SDLP policing spokesman, said those organising the demonstrations on social media must be held fully responsible for the resultant violence.
"I appeal for calm today and over the weekend and ask people taking part in protests to reflect upon the violence and ask themselves if they want to be associated with that violence and if that is the best way that they feel they can have their voice heard," he added.
"Nobody is in doubt that some paramilitaries are exploiting these illegal protests to destabilise the situation and ultimately bring violence back on to our streets."
Stormont First Minister Peter Robinson said violence against the police was a "disgrace" and those behind days of unrest were playing into the hands of dissident republicans.
On Thursday 10 police officers were injured in east Belfast during a demonstration against the decision to reduce the number of days the Union Flag is flown from Belfast city hall.