Six cars were destroyed in a blaze at 4am in Triq il-Wied Qormi.
A video sent in by a Times of Malta reader shows the fire department trying to put out the fire, with the cars blazing simultaneously.
Police investigations are still under way but arson has not yet ruled out.
Firefighters extinguishing the blaze in Qormi
The presence of a fuel container nearby has not gone unnoticed by investigators.