The Chilean navy has released a nine-minute video of a UFO flying over the country's coast near Santiago, admitting it has no idea what it could be.
The footage was shot in 2014 from a helicopter by a navy technician testing a new infrared camera, reports the Huffington Post.
The mysterious object could be seen with the naked eye, but couldn't be detected by the helicopter's radar, ground radar stations or air traffic controllers. No aircraft had been authorised to fly in the area.
In the nine-minute video, the UFO twice emits "some type of gas or liquid with a high thermal track or signal", the technician told the Huffington Post.
Chilean officials spent two years investigating the footage, and came up empty.
To read more and view the video, click here.