The video was sent to the Mutual UFO Network (MUFON) after a viewer of the bulletin, saws the yellow shape buzz past the iconic structure which holds the US Congress.
Alejandro Rojas, radio host for Open Minds Radio, wrote on Openminds.tv: “A video was submitted to a UFO investigation organisation showing something zipping in front of the camera during a shot of the US Capitol building on Fox News.”
The witness, from Rolling Meadows, Illinois, who reported it had said: “It flew in front of the capital building while I was watching Fox News.”
Mr Rojas said: “In the video, the object appears to be cylindrical and shiny.
“It moves quickly and steadily from the bottom left of the screen to the upper right.
“The shape of the object might not indicate the true shape and size of whatever passed in from of the camera.”
He said the object was likely to have been close to the camera, making it seem very large.
Mr Rojas added: “Since it was moving so quickly, the object’s shape could also appear more elongated than it actually is.
“In many cases such as this, birds and bugs are mistaken for something more mysterious.
“Motion blur cause the object to appear elongated and large, like a giant flying saucer. However, often in those cases wings flapping cause the object to look like it has ridges or multiple appendages.
“That effect cannot be seen in this video. I uploaded a version of the video slowed down to 10 per cent.
“So what is it? I don’t know. I suppose it could also be a hoax or maybe a yellow frisbee. Take a look at the video yourself and let us know what you think.”