UFO Sighting in Manaus with Low-Intensity Sound

Summary

In November 2001, a witness in Manaus, Brazil, reported a UFO sighting that lasted approximately 37 minutes. The object was seen at a distance of 100 meters and an altitude of 24,000 feet, with a round shape and greenish color. The observer noted that the object moved smoothly and emitted a low-intensity sound described as a hum. Although no visible trail was left, the witness confirmed the phenomenon was clearly observed under a clear sky.

The report, marked as confidential, was communicated to a Brazilian military organization. The observer, a 29-year-old musician, had no technical knowledge of aviation or UFO phenomena. The report lacks physical evidence or visual records but includes a detailed description of the object's behavior. The case was archived without further details, yet remains an intriguing example of a collective sighting in a tropical region.