ATLANTA --Atlanta firefighters are investigating a deadly fire out of southwest Atlanta. A 64-year-old man was killed in the blaze that four other people in his apartment escaped.

Fire officials believe it may have been a space heater that caused the deadly apartment fire at the Venetian Hills Apartments off Campbellton Road, all coming on an unusually cold morning that saw flames and snow flurries

Neighbors went door to door trying to help get each other out. Fredricka Hogan, 24, described the scene as "chaos."

PHOTOS | 1 person killed in apartment fire

Fire crews arrived to heavy flames that they say caused the death of a 64-year-old man. Four other people inside the apartment managed to escape -- but couldn't save him.

At least one person jumped to escape their apartment but only one other person was injured. That happened after getting out of their apartment.

Images from SkyTracker11 show the scope of the damage to the outside of the unit where the fire was centered.

Sgt. Cortez Stafford said approximately four units are damaged by the fire. Twelve residents have been displaced. Red Cross is also assisting and said they assisted 11 families, helping find 31 people temporary shelter.

MARTA buses arrived just after 7 a.m., to help get about 12 people who were displaced out of the cold.