Sighting Report of a 'Ghost Projectile' — Arnöberg, Sweden, August 11, 1946

On August 12, 1946, Thorsten Ericson, the Managing Director of Allmänna Svenska Elektriska Aktiebolaget, wrote to the Swedish Defence Staff (Försvarsstaben) in Stockholm to report a sighting of a 'ghost projectile' (spökprojektil). The incident occurred the previous evening, August 11, 1946, at 20:45. According to Ericson, a 'fully credible' witness observed the object from his farm, Arnöberg, located on the island of Arnön, approximately 25 kilometers south of Enköping. The witness described the object as a glowing, bluish sphere that moved silently from south to north. As it traveled, the object left behind reddish sparks in the air. The witness initially estimated the object's altitude to be just above the treetops, but upon further reflection, concluded that it was impossible to accurately judge the height. The object did not pass directly over the farm, but rather slightly to the east. The witness noted that the angle of elevation to the projectile was approximately 60 degrees from the horizon.