A mosque was targeted in an attempted arson attack in Co Down last night.
It is one of a series of overnight race-hate incidents being investigated by police.
The mosque on Greenwell Street in Newtownards was attacked at around 1am.
A petrol bomb was thrown but failed to ignite and racist graffiti was daubed on the building.
Cars were also set alight in Tavanagh Street and Sandhurst Gardens in Belfast – both incidents are being treated as racially motivated hate crimes.
The rear door of a restaurant on Ormeau Road was also kicked and racial slurs shouted at the workers inside.
It follows several nights of disorder in Belfast.
Sporadic violence has broken out across the city with homes and businesses targeted in racially-motivated attacks.
It follows similar scenes in English towns and cities after the killing of three young girls at a Taylor Swift-themed dance class in Southport.
Police said five further arrests were made on Friday, bringing the total number of people arrested here to 31.
On Friday, about 1,000 people gathered in Belfast for a counter-protest against several hundred anti-immigration demonstrators.
A 22-year-old man was arrested following yesterday’s protests when he threw a bottle at a police vehicle. He has since been charged with offences including disorderly behaviour and criminal damage. He is due to appear in court on September 6.
A 51-year-old man also arrested following the city centre protest activity has also been charged with disorderly behaviour and will appear in court today.
Meanwhile two 14-year-old boys were arrested in Londonderry following protest activity in Guildhall Square.
They were detained after petrol bombs were found by police in the vicinity of Spencer Road. Both remain in custody at present on suspicion of offences including possessing petrol bombs in suspicious circumstances.
A 37 year old man was arrested in Portrush on suspicion of ‘intentionally encouraging riot’ in relation to online activity. He remains in police custody at present.
Temporary Assistant Chief Constable Melanie Jones said: “We continue to investigate all reports made to us in relation to the recent disorder on our streets and we will be making further arrests.
“The outpouring of support from our communities for their Muslim neighbours has been heartening and more accurately reflects the views of most of the citizens of Northern Ireland.
“We will continue to have a significant visible policing operation in place across Northern Ireland over the weekend to ensure our communities are kept safe.”
Meanwhile, a 55-year-old man arrested on suspicion of Publishing Written Material Intended to Stir Up Hatred remains in custody.
A total of 31 people have been arrested and 24 have been charged.