Political leaders in the North are appealing for calm - after further violent protests in Co. Antrim overnight led to four police officers becoming injured. 

One officer needed hospital treatment - as loyalists protesting against the decision to limit the flying of the Union flag at Belfast City Hall, threw petrol bombs, bricks and fireworks at police. 

Two people have been arrested. 

Reporter David Blevins says it is just small groups who are now engaging in rioting on a nightly basis.