SEVEN FIELDS — The Pittsburgh Steelers running backs coach was seriously injured early this morning when fire broke out in a home at a multiunit townhouse complex, authorities said.

Kirby Wilson apparently suffered burns, one neighbor said, and firefighters had to carry him out of his Jameson Way home on a stretcher.

A medical helicopter later flew him to a Pittsburgh hospital. His condition was not immediately known.

Cranberry Township police and firefighters had to evacuate other residents in the complex but no other injuries were reported.

The fire appeared to be confined to the unit where the injured man lived.

Wilson is in his fifth season with the Steelers.

Wilson came to Pittsburgh with 19 years of coaching experience.

He previously coached for the Tampa Bay Buccaneers, New England Patriots and Washington Redskins, and was hired in 2007 by head coach Mike Tomlin when former running backs coach Dick Hoak retired.

The state police fire marshal is investigating the cause of the blaze that was reported about 2:40 a.m. State police and Cranberry police did not release any reports this morning.

Authorities said Wilson was taken by ambulance to UPMC Passavant Cranberry, and flown by medical helicopter to an unknown Pittsburgh hospital.

Assisting the Adams Area Fire District were firefighters from Cranberry Township, Callery, Harmony, Zelienople and South Butler. Cranberry Ambulance and Quality Ambulance also were called.