Residents who shot video can be heard screaming in disbelief in the clip

Mysterious footage purporting to show a UFO moving slowly and silently through the sky over America has 'shocked' the witnesses who filmed it.

The bizarre clip was captured in Cleveland, Ohio, by two people who can be heard reacting in disbelief as the black disk-shaped object 'spins' above them.

The video was shot at 9.45pm and the 'craft' was purportedly captured in a series of photographs taken by another witness in the area at the same time.

The truth is out there: The 'craft' was purportedly captured in a series of photographs taken by another witness in the area at the same time

The mysterious footage was sent to UFO enthusiast Tyler Glockner, who presents the popular YouTube channel SecureTeam10.

Tyler said he was keen on posting the clip because the sighting was sent to him from two sources, who both claimed to have seen the same black object.

He also purports that one source told him it had been sunny prior to the sighting before 'these very strange swirling dark clouds appeared out of nowhere'.

The 'menacing' clouds allegedly appeared near to where the UFO was spotted before the source grabbed a camera and started taking snaps.

Speaking over the images, Tyler said: 'As you are seeing, this thing is no balloon. This thing is something else.

Odd: The bizarre clip was captured by two people who can be heard reacting in disbelief as the black disk-shaped object 'spins' above them

'We have the classic disc or saucer shape to it, it's definitely a three dimensional structure.

'It looks like a hard structure, flat on top, it's got sort of a ridged outer ring, and we can see some of the bottom of the object poking out here.'

He adds that he was particularly interested by the top, which apparently shows some sort of 'circuitry' - the kind you may see on a 'circuit board'.

The video concludes with Tyler stating that it looks like a 'solid craft', without engines or blades. He also discredits the notion that it could be a drone.

Tyler Glockner, who presents the popular YouTube channel SecureTeam10, said his source who captured photographs of the 'craft' claimed swirling clouds emerged in the sky beforehand

The clip emerges on the back of an astronomer capturing mysterious footage purporting to show a massive UFO hurtling past Jupiter.

The presenter of YouTube channel TakeBackSpace TV was using a Nexstar telescope with a Sony a6000 camera to film a full moon from his house in Tampa, Florida when he spotted the 'craft'.

The video, which is more than four hours long in total, was posted to the UFO Sightings Daily website, where UFO enthusiast Chris Waring commented on it.

He described the footage as 'amazing' and claimed that the UFO looked to be about the same size as the biggest moons that orbit Jupiter - around 25 per cent of the size of earth.