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This mind-boggling footage appears to show a flying saucer moving slowly across the sky before vanishing.

The UFO was sighted above mountains near the city of El Alto, in the north-west Bolivian department of La Paz .

The footage shows a flying circular-shaped object which disappears and reappears in the clouds above a rural neighbourhood on the outskirts of the city.

To read more and view the video, click here.