UFO investigators are looking at all three sightings which occurred on January 13 after they were reported to the National UFO Reporting Center (NUFORC).
The first strange phenomenon happened at 12.45pm in Pasadena, California, when at least five “circular UFOs” were seen in the sky.
The unnamed witness said his cousin first spotted the alien objects and told everyone else in his family, reported Express.co.uk.
He said: “I looked up and in the sky I saw shiny dots in the sky. I observed the objects and then returned inside to get my iPhone to document what I saw.”
The witness said the objects did not look like drones or planes.