Cal Fire officers have determined the 110-acre Union fire in Jurupa Valley that prompted evacuations started in a concealed homeless encampment on the Santa Ana River bank.
The hidden encampment was set up illegally on private property, Cal Fire/Riverside County Fire said in a news release on Tuesday, June 28. The agency is still working to determine who started the fire, Cal Fire said.
“Cal Fire/Riverside County Fire Department has zero tolerance of unwanted fires on any open land due to their extreme threat to life and property,” the agency said in a statement.
The fire damaged multiple properties and impacted as many as 1,200 residents, Cal Fire said. However, the number of homes, extent of the damages and exact locations were not provided.
There also was no description of what ignited the fire.
The blaze was reported on Saturday, June 25, at 3:50 p.m. in the river bottom in the area of Indian Camp Road and Candle Light Drive, near the Jurupa Hills Country Club.
Cal Fire investigators also determined the cause of the Palomino fire on June 17 in Jurupa Valley near the intersection of Limonite Avenue and El Palomino Drive was started by someone in a homeless encampment near the river bottom.