RANDOLPH COUNTY, N.C. -- Firefighters battled five structure fires early Monday morning in Randolph County -- all within 12 miles of each other.
Officials are calling the fires "very suspicious."
Crews returned to the scene of one of the fires on Millboro Road in Franklinville, after flames began rekindling in the debris around 11 a.m.
The structure fire was first reported around 3:40 a.m. and the cause has been confirmed as arson by investigators.
For most of the morning, crews battled a fire at the historic Old Cedar Falls Post Office on Loflin Pond Road in Cedar Falls near Franklinville.
Officials say the door to the abandoned post office was open when they arrived.
Henry Bowers with the Cedar Falls Historical Society says the doors had locks on them. The firefighters later found the locks broken and on the ground nearby.
Crews responded to three additional fires in the vicinity, all since 2 a.m.
They responded to a fire at a building on Will Coltrane Road in Sophia around 2:15 a.m.
Another fire was reported less than six miles away around 3 a.m. in the Flint Hill Road/Beeson Farm Road area of Sophia.
The last fire was reported in the Jess Smith Road/Beeson Farm Road of Sophia.
All five buildings were vacant at the time of the fires.
There are no reported injuries.
The cause of the fires are under investigation. Officials say there is a possibility all may be connected.