Chief of Surgery, Family Die in 'Suspicious' Fire

Arson officials are investigation the fire that killed Dr. Joyce Bonenberger, her husband and son.
3:00 | 12/16/13

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Transcript for Chief of Surgery, Family Die in 'Suspicious' Fire
Now to the mysterious get of a prominent arizona surgeon. She died with her husband and son in a horrible house fire. The authorities are call doing fire suspicious. John mull er has more. My neighbor's house is on fire. No signs of detress from the house? Like cries for help or anything like that? No. Reporter: These are the frantic calls. You to think there are people trapped in the house? I don't know. Reporter: Neighbors trying to rescue the family inside. Somebody's kicking the door. I think he broke a window and is yelling to see if somebody might be in there. This morning, arson officials are investigating the serious early morning fire that took the life of dr. Joyce vonnenberger, her husband, dennis, and young son, trevor. Fire officials are saying it's suspicious. They had been planning a big party on saturday to celebrate trevor's 12th birthday. They moved in just a few weeks ago. We're saddened by it. I was praying all day she was out of town. Reporter: She was scheduled to be in surgery friday at the time of the fire. She was very loving. She was -- she was not just a physician and a chief of surgery. She was a member of the community. Reporter: A tight it in family, she owned and operated her own practice. Her husband was the office manager. They home-schooled their son. It's too early to tell what caused this deadly fire. For "good morning america," john muller, abc news, new york.

This transcript has been automatically generated and may not be 100% accurate.

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