A fire that engulfed a Macon house early Monday was deliberately set, fire officials said.

Macon-Bibb firefighters were called to 1220 Brentwood Ave., where the one-story vacant building was ablaze shortly after 6:30 a.m.

“We had heavy, heavy smoke, heavy fire coming out of all sides of the structure,” said District Chief James Wallace of the Macon-Bibb County Fire Department. “It was fully involved.”

Firefighters learned someone had recently been staying in the house off Beech Avenue, and crews thoroughly searched the building for possible victims.

Arson investigator Sgt. Ben Gleaton found two separate areas of origin for the fire, which he ruled to be arson.

Anyone with information about the blaze is asked to call the Georgia Arson Hotline at (800) 282-5804 or Macon Regional CrimeStoppers at (877) 68-CRIME.