Stabbings in Dublin and Westmeath, the stoning of a fire tender by youths in the Coolock area of Dublin and fires at industrial premises in East Wall and Swords, were among incidents attended by the emergency services last night.
However, gardaí and the fire services said the night, while busy, was quiet relative to
recent Halloween nights.
Gardaí in Tallaght are investigating after a man was stabbed in an incident in the Jobstown area about 9pm. The man, who is in his 30s, was taken to Tallaght hospital where his injuries were described as not life-threatening.
Gardaí said a 13-year-old boy in Coolock in north Dublin was arrested in connection with an incident in which the windscreen of a fire tender of was broken.
A file is being prepared on the incident.
Meanwhile in Co Westmeath gardaí are appealing for information after a man sustained serious injuries in an assault last night.
The 22-year-old man suffered a suspected fractured skull during an altercation at Willow Park in Athlone at around 12.30am.
He was taken to Portiuncula Hospital Ballinasloe before being transferred to Beaumont Hospital in Dublin where his condition was described as stable this morning.
Gardaí have sealed off an area in Willow Park where an examination of the scene is taking place.
Investigators are conducting inquires and have appealed for witnesses to come forward.
Anyone with information can contact Athlone Garda Station at 090 649 8550 or the Garda Confidential Line 1800 666 111.
Elsewhere the fire brigade attended fires at an old printing works and Airways industrial estate in Swords Co Dublin, while gardaí made a number of public order arrests across the country.
"It was busy but quiet" according to the Garda Press Office which said it would only collect data on very serious of incidents, and "thankfully" there was no information available on these, a spokesman said.
Dublin Fire Brigade reported a busy night with all engines out at several stages during the night. The calls ranged from out-of-control bonfires to burnt-out cars.
Spokespeople for both Tallaght and Beaumont hospitals said it was "calm" for a Halloween night. A spokesman for Tallaght said activity levels were "akin to a normal weekday," adding "there was no one on trolleys. A spokeswoman for Beaumont said activity reflected "a normal Thursday night".