At approximately 12.05 am police received a report that six vehicles had been set alight at Woodburn Road, Carrickfergus.
Fire and Rescue Service crews attended the scene and extinguished the flames.
Chief Inspector Stephen Humphries said: “This was a reckless and dangerous act; we are lucky we are not dealing with a more serious incident, as the vehicles were close to petrol vapours.
“This type of criminality affects the whole community.
“The perpetrators have in fact stopped other businesses in the area from being able to trade today – taking away their ability to earn money and bring trade and people into the town.
“Everyone has a right to live and work in a safe and stable community.
“No one has the right to take this away from anyone.
“Those who carried out this attack do not represent the people of Carrickfergus.
“I would ask anyone who has any information, or anyone who witnessed this incident, to contact police at Larne on the non-emergency number 101, quoting reference 19 of 01/11/18.
“Alternatively, information can also be provided to the independent charity Crimestoppers on 0800 555 111, which is 100% anonymous and gives people the power to speak up and stop crime.”