Report on the sighting of a 'fire phenomenon' on October 4, 1946, in Kärr, Roslagsbro parish

This document is a report authored by Captain Sandmark of the Defence Staff (Försvarsstaben), Department F.L., regarding a sighting of a 'fire phenomenon' that occurred on October 4, 1946, at 17:53 in Kärr, Roslagsbro parish. The primary witness, Karl H. Petterson, was driving a tractor when he observed a fire-yellow object approaching from a northerly direction. The object moved at a 45-degree angle, descending from approximately 10 meters above the ground to 2 meters, at which point it exploded. The object was described as having a fire body with a trail of light behind it. The explosion resulted in what was described as a 'shower of iron' (järnregn), though the sparks extinguished almost immediately. Due to the noise of the tractor, Petterson did not hear any sound associated with the explosion. A second individual, Per B. Lindberg, was also present in a potato field near the road at the time of the sighting.