A small blaze at the door of the private residence of the president of the Mqabba PN club, was quickly controlled, the police said this morning.
The residence is in Triq il-Kileb, Mqabba. No one was injured in the fire, which was reported at about 3.50 a.m.
Magistrate Silvio Meli is holding an inquiry.
A number of people were injured at the Mqabba PN club during a shooting last month.
In a statement, the Mqabba council condemned the vandalism and urged anyone who has information which can assist the police in their investigations to contact the police station.