A curious piece of footage captured by a puzzled airliner passenger en route to Riyadh appears to show a disc-shaped UFO hovering in the sky. The strange scene was reportedly filmed last month by Neeraj Singh as he was in the middle of a flight from India to Saudi Arabia. While looking out the window, he spotted something strange alongside the plane and proceeded to film the oddity with his cell phone. In the admittedly difficult to discern video, a peculiar white dot can be seen off in the distance. An enhanced version of the video (which can be seen above) seems to suggest that the anomaly is a silver, disc-shaped object.

As for what the weird aerial interloper might have been, observers have put forward a variety of theories, including the possibility that it was some kind of alien craft. Skeptical viewers, of course, have offered more prosaic explanations for the unidentified flying object, including an errant balloon or another plane that merely looks out of the ordinary due to how far away it is. Similarly, another theory which has merit is that the 'UFO' is merely moisture on the window of the airliner. With that in mind, what's your best guess for the nature of the strange object that Singh filmed? Share you thoughts at the C2C Facebook page.