Officials say the fire started on the front porch area of an apartment and spread to the second floor units.
Nine people were displaced after three rowhomes were deemed uninhabitable.
Investigators tell Action News the fire inside the lobby of a Citizens Bank may have been intentionally set.
Arriving fire crews found the garage with a vehicle inside engulfed in flames.
Officials are calling a fire that tore through a home in the Frankford section of Philadelphia "suspicious."
The fire marshal is investigating a suspicious fire in West Philadelphia.