State Police say a fire that killed a young girl near Interstate 81 in Smyth County was an accident. 2-year-old Abigail Dove Mardis died after a fire roared through the County Club Crossing Apartments last week in Marion. The fire also injured three members of the girl’s family. Police say human error contributed to the fire. It began in the Mardis family’s second-story apartment and then spread to three nearby apartments.