A 16-year-old boy that killed his friend in a bow and arrow accident last year in Chaska will not be facing criminal charges for the incident. Prosecutors say that there is no evidence that the boy intended to shoot the arrow at 16-year-old Spencer Swanson, or to injure him. The boy had just received a compound bow and reportedly wanted to show it to Swanson last October. Swanson was riding his bicycle near his home when the boy lost his grip on the bow string, and the blunt, tipless arrow shot about 94-feet and struck Swanson in the forehead. He died at a hospital two days later.