On Wednesday, 14 September 1988, at 6.50 am local time, a number of people saw the strange object come from the west and crossed the sky over Quebrada de Humahuaca in the Argentine province Jujuy leaving behind a smoke trail. After a moment, the sound of the explosion horrified witnesses and they saw the disintegration of the object, which fell to the ground in semi-flames. Read more (PDF)