Yikes... look at the aerial of this hangar from google maps (Houston Southwest Airport). The planes are pretty much parked on top of each other. Makes sense if a fire occurred on one why it would blow a wing tip off another. :/
ETA: Two COMPLETELY different stories on this incident... this one says it was a maintenance fire:
http://www.click2houston.com/news/aircraft-hits-hangar-bursts-into-flames-at-arcola-airport
The plane was receiving maintenance. The deceased and injured may have actually been working on the plane, not in it.
This one says it was a plane crash involving an instructor and student...
http://abc13.com/news/one-dead-another-injured-in-arcola-plane-crash-fire/1181934/
Nothing confusing or conflicting here! geez. Maybe the media could wait until all the facts are in before saying it's one thing or another.