The US government has said it has no explanation for dozens of unidentified flying objects seen by military pilots.
A Pentagon report released on Friday says of 144 reports made about the phenomena since 2004, all but one remain unexplained.
It does not rule out the possibility that the objects are extra-terrestrial.
Congress demanded the report after the US military reported numerous instance of objects seen moving erratically in the sky.
The Pentagon then established the Unidentified Aerial Phenomena Task Force last August to look into the reports.
The group’s job was to “detect, analyse and catalogue” these events, as well as to “gain insight” into the “nature and origins” of UFOs, the Pentagon said.
Did the report reveal anything new?
The interim report released on Friday said most of the 144 reported cases of the “unidentified aerial phenomena” (UAP), came in the last two years, after the US Navy put in place a standardised reporting mechanism.
In 143 of the reported cases, they “lack sufficient information in our dataset to attribute incidents to specific explanations”.
Crucially, it said there were “no clear indications that there is any non-terrestrial explanation” for the aircraft, but also did not rule it out.
Agencies