The door of a residence in Triq il-Madonna tal-Ġilju, Mqabba was set on fire early this morning.
The police said that preliminary investigations showed that a flammable liquid caused the door and a bamboo curtain (ħasira) in front of it to catch fire.
The blaze was extinguished by residents. No one was injured .
Duty magistrate Michael Mallia is holding an inquiry.