FBI agents reported witnessing a mysterious black triangular object hovering silently above a mountain ridge before suddenly accelerating at speeds comparable to a fighter jet, newly released Department of War documents reveal.
The 2026 sighting is among several incidents detailed in the newly released records examining unidentified anomalous phenomena (UAP), alongside decades-old military encounters and reports of mysterious creatures, unexplained lights and supposed portals at a Utah ranch.
One report from the FBI describes an encounter with a dark, nonreflective triangular object resembling a drone, with an estimated wingspan of 9 to 15 feet and no visible exhaust or conventional propulsion system.
The agents reported seeing the object rise vertically above a ridgeline before accelerating into a canyon without making a sound.
A separate report from the Pentagon's All-domain Anomaly Resolution Office (AARO), which investigates reports of unidentified anomalous phenomena, provides a more detailed account of the encounter.
The report describes a matte-black triangular object that climbed about 200 to 300 feet above a ridgeline, hovered for roughly 20 seconds and then appeared to accelerate almost instantly, disappearing into a canyon within two to three seconds.
The witnesses described an object with no visible engines, rotors, exhaust or other conventional aircraft features.
Read the the FBI report show the actual encounter or are illustrations.
The newly Bigelow Aerospace Advanced Space Studies (BAASS) at a Utah ranch associated with reports of unexplained phenomena.
Investigators interviewed residents who described towering dog-like creatures walking on two legs, mysterious balls of light and other unusual sightings.
Other witnesses reported smaller, hairy creatures, a prehistoric-looking bird and a worm allegedly measuring 8 feet long. One witness also described a transparent, rippling structure she believed was a portal to another world.
The investigation included eyewitness sketches, surveillance cameras, environmental monitoring and hair samples collected from areas associated with reported creature sightings.
Laboratory testing, however, identified the hair samples as coming from ordinary animals, including domestic dogs and a raccoon.
The report did not establish the existence of the alleged creatures or other extraordinary phenomena.
Fox News Digital reached out to the FBI for comment.