There is a significant police presence in Ballymena last night as officers deal with a second night of disturbances.
Water cannon have been deployed against rioters in the Co Antrim town.
Masonry and fireworks have been used to target police officers.
A number of small fires are burning close to the commercial centre of the town.
Masked youths have been roaming around the centre of town, some smashing paving slabs to make missiles to throw at police.
A number of baton rounds have been fired by police.
The PSNI has asked members of the public to avoid the area around Clonavon Terrace, where there was rioting.
Riot police were deployed around the area, a day after serious unrest in the area.
A number of homes close to the scene of the disorder have been attacked.
At one point a family was seen being brought by a riot officer from one property to another.
Hundreds of people have gathered in the Co Antrim town, while PSNI vehicles have formed barricades on some roads.
Northern Ireland Secretary Hilary Benn said there is "no justification" for attacks on police officers or vandalism in Ballymena.
In a social media post, Mr Benn said: "The terrible scenes of civil disorder we have witnessed in Ballymena again this evening have no place in Northern Ireland.
"There is absolutely no justification for attacks on PSNI officers or for vandalism directed at people's homes or property."
Disorder last night
The PSNI has strongly condemned disorder on Monday, during which 15 officers were injured and one man was arrested.
A 29-year-old man has since been charged with disorderly behaviour, attempted criminal damage and resisting police.
He is due to appear before Ballymena Magistrate's Court on Thursday.
A number of homes and businesses were damaged with windows and doors smashed, while four houses were also damaged by fire, with three people evacuated.
Police said the violence happened after a protest in Ballymena town centre linked to an alleged sexual assault.
Two teenagers appeared in court charged with attempted rape.
Police said some masked individuals peeled away from the vigil and began to build barricades and attack properties.
Those attacks are being investigated as "racially motivated hate crimes".
Elements of the crowd then turned on police firing petrol bombs and masonry.
They say the disorder was "sustained".
Police said their 15 injured officers were "walking wounded" who were recovering.
Most had been hit by masonry during the disturbances during which petrol bombs were also thrown.
One plastic baton round was fired, and one person struck.
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The PSNI also put on display two of its vehicles which had been badly damaged during rioting.
Assistant Chief Constable said there had been one arrest and promised more, as detectives trawled through footage of the incident, including social media content.
Police are also investigating a report of arson in the nearby village of Cullybackey.
Northern Ireland Fire and Rescue Service said it had evacuated seven people from one of the houses which had been targeted in Ballymena.
Three other people caught up in a car fire in nearby Cullybackey were passed to the care of the ambulance service.
PSNI Assistant Chief Constable Ryan Henderson said: "We are actively working to identify those responsible for last night's racially-motivated disorder in Ballymena and bring them to justice.
"Over the coming days, we will have in place a significant policing presence to help protect these communities in Ballymena and prevent any future disorder."
Local TUV MP Jim Allister said tensions in the town had been growing over immigration, adding that the violence followed a peaceful protest in support of the family of a girl who was the victim of an alleged sexual assault in the town at the weekend.
Stormont's Justice Minister also condemned the disorder.
Naomi Long said she was horrified to see police officers attacked, residents frightened and properties damaged.
"There is absolutely no place in our society for such disorder and there can be no justification for it," she said.
"I would appeal to those involved to seriously consider their actions and step back from this behaviour before someone is seriously injured or worse."
Additional reporting PA
