Firefighters are trying to figure out what started a four-alarm blaze in Shadyside Thursday.
It happened at an apartment building in the 5400 block of Elmer Street.
The fire started in the third floor of the building just before 3:30 a.m. Thursday.
Crews said the fire caused $200,000 worth of damage.
One firefighter was injured after a part of the building collapsed on him.
"We were standing here watching the fire and walls started collapsing, said Ian Derba, an Elmer Street resident. There was a guy underneath of it, and it fell on top of him. We started running."
The firefighter was taken to UPMC Presbyterian Hospital.
No information has been released on his condition.
Copyright 2006 by . All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
