The video obtained by investigate journalist David Collins shows military aircraft in the skies above Arizona on the night of one of the world's most famous UFO sightings in March 1997.

This incredible leaked classified video shows fighter jets "engaging unknown aircraft" in the skies above the southern US on the night of one of the world's most famous UFO sightings.

The 14-second clip, posted on YouTube, shows American military aircraft on patrol during the Phoenix Lights sighting of March 13, 1997 when a series of lights were spotted above Arizona's state capital.

The military footage was obtained exclusively by US investigative journalist David Collins, of Phoenix-based KWBV Investigations, who later alerted Mirror Online.

Very impressive! To read more and view the video, click here.