Final answer:
Investigators should note the dates of any newspapers found at the fire scene, as they could provide evidence about the property's occupancy or the framing of the fire as an alibi.
Step-by-step explanation:
In cases where a fire occurs during holidays or weekends, it could signify a planned arson, as these times may provide a convenient alibi for the property owner. Investigators should note the dates of any newspapers found at the fire scene. The presence of newspapers, especially if they are dated around the time of the fire, could provide insight into whether the property had been uninhabited or if the arsonist staged the scene to look as though the property had been abandoned before the fire. This information contributes valuable evidence as it may either support or contradict the owner's stated whereabouts during the time of the fire.