Members of the Garda Regional Support Unit had to be called to Athlone at the weekend after a serious row broke out on the west side of the town.
Four people have been remanded in custody after a series of violent events in the area of Parnell Square on Saturday afternoon.
It’s understood the incident began with an attack at a house.
A car was set on fire, and a house was also damaged by fire in other attacks at Parnell Square.
A quantity of cannabis plants with a street value of six and a half thousand euro were discovered at a follow-up search in a house.
Three people were to appear again in court in Athlone tomorrow on charges including violent disorder, assault, and possession of weapons.
Another person is due to appear at Cloverhill court on charges related to the cultivation of drugs.