The Sand Springs Fire Department and State Fire Marshal's Office are investigating four fires at the Apple Creek Apartments reported in the span of nine days.
The most recent fires were a dumpster fire reported at 11:30 p.m. Saturday and another in one of the complex's laundry rooms at 3:13 a.m. Monday.
Sand Springs Deputy Fire Chief Justin Hall said a separate dumpster fire was reported at the apartment complex around 10:30 p.m. Sept. 16, and a car fire was reported at 2:15 a.m. Sept. 20.
"It appears we have a 'fire bug,'" Sand Springs Fire Marshal Stan Smith said. "They were in close proximity to one another and there's no evidence of spontaneous combustion."
Smith said the specific causes of the fires are undetermined at this time, but it's believed they were started.
Lynco Properties Regional Superviser Christian Rodriguez said the recent fires are unusual for the complex.
"We rarely have fires here and all of a sudden, there were four at once," Rodriguez said.
Anyone with information about the fires is asked to call Smith at 918-246-2500 ext. 2551.