The first fire was around midnight in the 400 block of South Zunis in Tulsa.
Firefighters were called to a home and found the back porch on fire. It was quickly put out. Everyone in the home got out safely.
Investigators call the fire suspicious. The Red Cross was called in to help the family.
Investigators are also looking into a suspicious fire at Celebration Station at 4500 East Skelly Drive. Tulsa firefighters were called shortly before 2 AM. They found a soda machine on fire. They say the machine was unplugged.
Officials say the fire may have been started to cover up a theft.