The Tri-City Herald reported that the investigation into two fires Feb. 12 found firefighters made sure the first blaze was out before leaving.
No residents were injured. One firefighter was treated at a local hospital.
Kennewick Fire Chief Neil Hines says there were no breaches of fire department policy.
The first blaze started shortly before 8:45 p.m. The fire was under control within an hour and the last fire truck left the scene at 11:18 p.m.
Crews were called back around 3 a.m. as a second fire engulfed the building’s roof.
Officials said the second fire started somewhere in the attic.
More Northwest Headlines
1 dead, 2 injured in drive-by shooting in Federal Way Yakima youngsters mix Legos, science education Activists rappel off Oregon bridge to stop Shell icebreaker Stanwood man pleads guilty to stealing from Swinomish tribe Death penalty dropped from Carnation killings trial Poll: Just 30 percent inclined to re-elect Gov. Inslee GOP lawmakers want Washington to look at Planned Parenthood Salvation Army sets up charging ports for Portland homeless
Our new comment system is not supported in IE 7. Please upgrade your browser here.