ROANOKE COUNTY (WSLS 10) - The cause of the fire that killed both McKinnon boys has been ruled undetermined.
The Roanoke County Fire and Rescue Department believes that the cause of the March 19 house fire is accidental in nature.
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The heavy fire collapsed the roof and destroyed the house, which makes it difficult to determine what specifically sparked the blaze, according to Jennifer Conley Sexton, the public relations coordinator for the department.