The sighting, which happened in Grangemouth on the evening of Monday, October 12 near petrochemical giant Ineos, is now being investigated by professional UFO hunter Malcolm Robinson.
Mr Robinson, the founder of Strange Phenomena Investigations (SPI), said: “The witness, who wishes to remain anonymous, has, over the past few weeks, observed a circular white object in the sky near the refinery plant on consecutive nights beginning at 8pm and concluding at around 9.30pm.