Police say 25 vehicles and a trailer were badly damaged in the early hours incident in the Landsdowne Industrial Estate area.
A primary line of enquiry, the PSNI added, is the attack is linked to the ongoing feud between rival drugs gangs across Ards and North Down.
Anyone with information is asked to contact detectives in Larne on the non-emergency number 101, quoting reference number 100 29/04/21.
1. Arson Attack
Anyone with information about the incident is asked to contact police on 101. Jonathan Porter/PressEye Photo: Jonathan Porter/PressEye
2. Arson Attack
A number of vehicles were set on fire and damaged in the early hours of Tuesday. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter/PressEye
3. Arson Attack
Police are investigating an attack on premises in the Landsdowne Industrial Estate area. Picture by Jonathan Porter/PressEye Photo: Jonathan Porter/PressEye
4. Arson Attack
Police received a report that a number of vehicles had been set on fire. Jonathan Porter/PressEye Photo: Jonathan Porter/PressEye