Transcript for Investigators Calling Washington, DC, House Fire 'Very Suspicious'
The mysterious fire in an upscale Washington, D.C., neighborhood. The bodies of three adults and a child found inside the mansion. Reporter: Good mornings, George. This is a real mystery. A deadly fire in a neighborhood of multimillion-dollar homes. The cause of the fire suspicious. Authorities have yet to say who the victims are or how they died. Just a few blocks from the vice president's official residence, a and full of mansions. 3201 woodland drive. A three-story house fire on the second and third floors. Reporter: A suspicious fire at this $3.5 million home. We've removed four victims. The fire is suspicious in nature. We have Slee adult and what appears to be a child deceased inside the home. Reporter: Police would not say who they are or how they died. But WJLA obtained politics records showing that the CEO of American ironworks lived here. His wife, Amy, active in society circles. Neighbors say three children live here. Two away at boarding school. I've been here for 25 years. Nothing like this ever happens. It's rattling. Reporter: A blue Porsche 911 was seen at the home before the fire and later, found abandoned. Authorities have reportedly found evidence suggesting that the fire was set. Unclear if the four victims died in the fire or were already dead. And the motive and possible culprit also unleclear. Now to the ABC news exclusive.
This transcript has been automatically generated and may not be 100% accurate.