Homes have been damaged in east Belfast, during a third night of disturbances.
Windows of two houses in the Short Strand area were broken at about 18:05 GMT on Tuesday.
A woman in her 70s was treated for shock after the attack at her home. Police believe the windows were smashed by youths throwing stones at them.
Ch Insp David Moore has asked parents to ensure they are aware of the whereabouts of their children.
Sinn Féin councillor Niall Ó Donnghaile called for calm.
"This is yet more evidence of the fallout from the ongoing orchestrated attacks taking place in east Belfast," he said.
"I want to repeat that all incidents at the interface in east Belfast should end now and residents there should be left to live in peace."
On Monday, a teenage boy was treated in hospital after suffering head injuries near the Albertbridge Road.
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.
On Sunday, an officer was injured after police were attacked by about 60 youths near Castlereagh Street.