Macon-Bibb County firefighters suspect arson in the second fire in weeks in a vacant house at 1660 Second St.
Crews were dispatched at 6:45 a.m. Monday to the bright yellow house at the corner of Violet Avenue.
Firefighters say the blaze began on the rear porch of the two-story house.
On the front porch, an arson investigator posted flyers soliciting anonymous tips for the Georgia Arson Hotline at (800) 282-5804.
Anyone with information about the fire is urged to call the hotline or Macon Regional CrimeStoppers at (877) 68CRIME.