Police in Londonderry said they responded to an above average volume of calls and incidents, while a spokesman for the Northern Ireland Fire and Rescue Service said five fire appliances had to attend a fire at a derelict social club at Belfast's Peter's Hill.
In another incident involving a garage at Ballynakilly Road, Coalisland, eight cars were
damaged.


"Crews were faced with large crowds which had gathered at a number of bonfire locations, however, on a positive note there were no attacks on appliances or crews attending calls," the NIFRS spokesman said.
He said gorse and bonfires accounted for the majority of
incidents.


"There were, however, a number of incidents where crews had to protect nearby properties from fire spread."
The spokesman said the number of calls received by the fire service equated to a call approximately every 45 seconds for seven hours.
Police in the Londonderry area said they arrested 30 people in the city during the Halloween celebrations.



One person was arrested in relation to the stabbing of a teenager.
The young man was attacked in the city by a mob of around 10 people near a car park close to Craigavon Bridge.
The incident occurred at around 10pm as Halloween celebrations in the city took place.


The victim was taken to hospital but his condition was not believed to be life-threatening.
One man was arrested and yesterday he was understood to be assisting police with their inquiries.
Altnagelvin Hospital dealt with 60 cases of people needing treatment, many of them involving alcohol. Several people were kept in overnight.
Alan McKinney, Accident and Emergency consultant at Altnagelvin, said: "It was the single most important factor – as it always is.
"We could probably close most A&E departments at 10 o'clock at night if it wasn't for alcohol.



And certainly at Halloween, if the alcohol factor was removed, it would be an average normal night."
In Belfast three people were treated in hospital for minor fireworks injuries.
A 17-year-old sustained serious but not life-threatening injuries during an assault in the Shankill Road area.
The victim was dragged out of a hot food bar by a large crowd which had gathered around 12.40am.
Another man was hurt during the incident, although the extent of his injuries is not known.
Police yesterday questioned a 17-year-old in relation to the incident.