An early morning fire destroyed five units in a southside apartment building, displacing 6 residents.

Tucson Fire Department responded to a call at the 300 block of West Irvington Road at 5:34 a.m., according to a news release. The first units on the scene reported heavy smoke and flames.

Firefighters evacuated residents and controlled the blaze in about 12 minutes. Several people were treated at the scene for smoke inhalation, with one person taken to the hospital for further evaluation, officials said.

A total of five units were condemned by City of Tucson Building Safety and two vehicles parked by the building were damaged by the high temperatures.

The  fire was started by an electrical malfunction involving a refrigerator being plugged into an extension cord, officials said.

Senior Editor, News, Arizona Daily Star, Tucson, Az.