Pittsburgh Bureau of Fire responded to a call for a three-alarm structure fire affecting two houses on the 800 block of Luella Street at around 10 p.m. 

When firefighters arrived on scene two structures, which were both abandoned homes, were fully engulfed in flames. A neighboring structure, another abandoned house, received exposure from the fire.The latter structure was already previously condemned and slated for demolition. 

All of the structures were unoccupied.

EMS was on hand, but there were no injuries to firefighters or bystanders and the fire was under control within about 30 to 40 minutes. Firefighters tackled hotspots to ensure there were no further flareups.

 Peoples Gas and Duquesne Light arrived to ensure the utilities were shut down to both structures. PLI was called to determine the structual integrity of the buildings.

The Fire Investigation Unit will investigate the cause of the fire. 

UPDATE: Two structures, not one, were fully engulfed by flames when firefighters arrived on scene. A third structure was exposed to the fire.