UPDATE: 8:36 a.m 02/10/21

The Fire Investigation Unit has determined the cause of this fire to be accidental/electrical. In addition to the male victim of this fire, two large dogs were also discovered deceased on the second floor of the home.

Firefighters with the Pittsburgh Bureau of Fire responded to 9-1-1 calls for a 3-alarm residential structure fire with possible entrapment in the 400 block of Knox Avenue around 1:45 p.m. Responding units arrived on scene five minutes later.

A staircase collapsed as firefighters were trying to reach a male reportedly trapped upstairs.

Pittsburgh Bureau of Fire Chief Darryl Jones confirmed on scene that a male was found deceased on the second floor of the home. At least one woman escaped uninjured. 

EMS transported two firefighters to the hospital after they suffered non-life-threatening injuries. Police secured the scene and helped residents from a neighboring home evacuate safely.

The Fire Investigation Unit is investigating the cause of the fire.