UFO spotters have been left in shock as a 'semi-transparent triangle' was spotted hovering over a city - and an expert said this is '100 per cent a real alien craft'.
One witness managed to capture a video of the bizarre sighting, and the short clip shows the unknown object floating effortlessly in the sky.
The witness estimated the craft would be around 60-75ft in length, and experts believe the object, which is triangular in shape, can't be a jet plane of any kind as it doesn't move at all during the video.
