A car was destroyed after bursting into flames in Ta' Xbiex early on Monday.
An eyewitness said the incident took place at 3 am while the vehicle was parked on Triq Giuseppe Cali.
Another two cars were damaged. Firefighters put out the flames.
This was the second such incident in a few months, with another car having been similarly destroyed nearby.
A magisterial inquiry is underway.
Photos by Ken Cowan.
Photo: Ken Cowan