A teenage boy has been treated in hospital after suffering head injuries during disorder in east Belfast.
Jordan Else, 15, was injured near the Albertbridge Road on Monday. Police are investigating how he was hurt.
His family said the teenager had suffered two skull fractures and has received eight staples.
Police said petrol bombs and missiles were thrown in disturbances throughout the evening in the Castlereagh Street area.
A police officer sustained an arm injury in the disorder.
Jordan Else lives in Nottingham with his mother, but his family said he was in Belfast to visit his grandmother who is ill.
They said he was attacked as he returned from a take-away restaurant.
On Sunday, an officer was injured after police were attacked by about 60 youths near Castlereagh Street.
Police said the disorder on Monday began when groups of youths gathered in Castlereagh Street, Woodstock Link, Albertbridge Road and Templemore Avenue.
A number of petrol bombs were thrown at officers in Templemore Avenue, but they failed to catch fire and no damage was caused.
Police said that stones, bottles and other missiles were also thrown in both directions at an interface, causing damage to homes on both sides. A car on Bryson Street was hit also by a paint bomb.
The injured police officer was hurt near Paxton Street. One man was arrested for disorderly offences.
Ch Insp David Moore said: "Police officers came under attack yet again last night and local homes have been damaged.
"We need to get away from disorder becoming a nightly event. People in this area, no matter what community they come from, do not want it.
"Police have been working closely with community representatives to find workable solutions and we will continue to do so."
Ch Supt Nigel Grimshaw said: "Young people are coming out during the half-term break.
"They are going to a sensitive interface area where tensions raise very quickly and, as a result of that, what happens is violence ends up on our streets which police have to respond to and people end up getting hurt.
"Nobody in those communities really wants this and we need all leadership across political, civic and community working with ourselves trying to bring some resolution before this gets out of hand."