TEMPE, Ariz. - Crews battled a first-alarm apartment fire near near Priest and Baseline Roads on Friday morning.
According to the Tempe Fire Department, two units were engulfed in flames, causing crews to evacuate the entire building.
The fire swept through the attic and burned through the roof on one side of the building.
Four people were displaced due to the fire.
"Our balcony sliding glass doors were cracked open and I shouted out.. said there was a fire and they said, yes, get out," said Christian Michaelsen.
Sherry Anderson added, "You could hear the screaming. It was loud. You couldn't make it what she was saying."
A maintenance worker was treated at the scene for smoke inhalation.
At this time, TFD says the cause of the fire is unknown.
Investigators working to determine what caused a 1st alarm apt fire. 5 displaced 1 treated for smoke inhalation pic.twitter.com/WVu0Jm5kBI— Anita Roman Fox 10 (@ANITAROMANFOX10) March 4, 2016
Officers assisting #TempeFire with an apartment fire at Priest/Baseline. Use caution in the area.— Tempe Police (@TempePolice) March 4, 2016