Man arrested on suspicion of starting deadly Gann Fire says it began by accidentA man arrested on suspicion of starting the massive Gann Fire in Calaveras County said the wildfire began accidentally. A man arrested on suspicion of starting the massive Gann Fire in Calaveras County said the wildfire began accidentally. A man arrested on suspicion of starting the massive Gann Fire in Calaveras County said the wildfire began accidentally. A man arrested on suspicion of starting the massive Gann Fire in Calaveras County said the wildfire began accidentally. CALAVERAS COUNTY, Calif. (KGO) -- A man arrested on suspicion of starting the massive and deadly Gann Fire in Calaveras County said the wildfire began accidentally while he was collecting scrap metal to earn extra money for his wife.