They discovered it was left by tricksters.
One morning, someone reported that there was an unknown white powder at the intersection of two roads in Edmonds, Washington.
Firefighters cleared the scene, and the hazardous materials team was called in.
They determined the "white powdery substance" was not hazardous. In fact, it was only white flour.
A witness who had been jogging came forward to explain that she had seen the two tricksters who had dragged the bag of flour into the road. They fled when she took the bag away and tossed it in the trash.
A cartoon representation of the two culprits
who had dragged the bag of flour onto the road.
2 crows plus a bag of flour equals a hazmat scene, The Herald, Everett Washington>>