A US government report on สล็อตxo sightings of unidentified flying objects (UFOs) found no evidence of alien activity but does not rule it out, officials have told US media.
The review of 120 incidents is expected to conclude that US technology was not involved in most cases.
But beyond that, the report makes no definitive assessments about what the objects might be, officials said.
A declassified version of the report is due to be handed to lawmakers in June.
The report is the product of a military task force established last year to investigate decades of unexplained aerial sightings in US airspace.
The Department of Defense said it wanted to "improve its understanding" of unidentified aerial phenomena (UAP), also known as UFOs, and determine whether they posed a threat to national security.
The report was mandated as part of a pandemic relief package signed by former US President Donald Trump last year.
Its release has captured the imagination of the public in the US, where UFO sightings have long been the source of intrigue and alien conspiracy theories.
Speculation about the contents of the report has been building among UFO enthusiasts ahead of the its slated release to Congress on 25 June.