The disturbances broke out at bonfires over Halloween weekend.
Seven people were arrested following public order incidents in Laois over the weekend.
A disturbance broke out at a housing estate in Mountmellick on Friday, after gardaí and county council staff ordered the removal of stockpiled bonfire material.
Despite the removal of two lorry loads of waste, a bonfire was lit at an unfinished house in the Cullenbeg estate, and one person was arrested.
Gardaí and Laois Fire Service also attended the scene of a bonfire at about 9 o'clock on Saturday night following reports of a large gathering in the area.
Gardaí encountered a group of young people who had gathered in the area, a number of whom failed to leave the area when asked to do so.
A further six people were arrested and all taken to Portlaoise Garda station.
No injuries were reported and investigations ongoing.
Planning Permission Approved For New 800 Pupil Secondary School In Midlands
Annual Rose Of Tralee Tour Underway
Longford-Westmeath TD Urges Action On Vacant HSE-Owned Buildings
Taoiseach Backs Offaly Camino Proposal
Laois Pride Launch Writing Competition In Memory Of Joe Drennan
Laois Truck Driver Arrested For Driving Overweight Truck Under Influence
Offaly Business Closed Over Food Safety Breach
Gardai Continuing Laois Meadow Fire Investigation