PHOTO: The cause of a fire that broke out in the outlet yard of the Idaho Youth Ranch on July 18 and kept Boise Fire Department crews at the scene through the night and into the next morning was ruled as "undetermined."
On Thursday, the Boise Fire Department tweeted that its investigation in conjunction with the Boise Police Department is complete. The cause was ruled undetermined due to the amount of water used and the "removal of items from the area of origin in order to extinguish the fire." Putting the fire out used 638,000 gallons of water, BFD said, with a peak flow of about 4,500 gallons per minute. Determining the cause was impractical, BFD tweeted, although investigators were able to eliminate a few causes, like fireworks, battery failure, smoking ash, electrical problems, operating equipment and incendiary.