The door of a private residence in Grosseto Street, Birkirkara was damaged by fire in the small hours yesterday morning.
The police, who said the blaze was reported to them at 1.30am, made efforts to put it out until the arrival of Civil Protection Department staff, who brought the situation under control.
Both the door and façade of the building were damaged, the police said, but no one was injured.
Magistrate on duty Dr Edwina Grima was informed.