NEVADA COUNTY --
Four firefighters were hurt while battling the Lowell Fire in Nevada County Sunday afternoon. The 1,500 acre blaze is burning north of Colfax in the Steep Hollow drainage, west of the town of Alta.
A CalFire spokesperson said preliminary reports indicate the position the four firefighters were holding was overrun and their engine burned.
Three of the four injured firefighters were flown to UC Davis Medical Center's Burn Unit in Sacramento.
"They were transported by helicopter, typical protocol, very difficult access into this fire. Easiest way to get people out is by helicopter," Lynn Tolachoff, a Cal Fire spokesperson, told FOX40.
The fourth burned firefighter was taken out on roads by ambulance.
Two of the firefighters were with Cal Fire. They were treated and released Sunday night.
One U.S. Forest Service firefighter was treated and released Sunday, and another is being held at UC Davis Medical Center with severe burns.
Tolachoff said in the steep terrain where the fire is burning, wind on Monday could change everything.
"We're supposed to have some winds out of the north and northeast tomorrow which is a concern because that pushes the fire in a different direction," Tolachoff said.
How exactly the Lowell Fire started is still under investigation, according to Tolachoff
However, Cal-Fire said it is no longer looking for a white Jeep Wrangler seen in the area when the fire started, originally considered a vehicle of interest.