Authorities in Santa Rosa have an update on a fire that left a five-year-old disabled boy with severe burns. Investigators were not able to determine the cause of the fire, which happened in a unit at the Walkham Townhomes on July 15th. But, they say it started at the foot of the boy’s bed, where equipment for a ventilator was stored. The boy suffered burns to 90-percent of his body and was transferred to a burn center in Sacramento with life-threatening injuries.