A hunter’s illegal campfire is being blamed for starting the fire west of Yosemite that sent smoke pouring into Carson Valley for the better part of two weeks.
U.S. Forest Service and Tuolumne County District Attorney’s Office investigators announced the cause Thursday.
The Forest Service denied rumors that a marijuana grow was responsible for the fire, saying no sites were found near the origin.
No arrests have been made at this time, and the hunter’s name is being withheld pending further investigation.
The Rim fire began Aug. 17 on the Stanislaus National Forest near the area known as Jawbone Ridge. The fire has burned 237,341 acres, and is 80 percent contained.