Images of unidentified lights in the sky are being studied to see if they were a warning of the earthquake which shook Britain.
There were several reports of celestial sightings above Lincolnshire in the days before the earthquake, which had its epicentre near Market Rasen when it struck on February 27.
It raises the question, whether people saw "earthquake lights" - thought to be caused by an electro-magnetic discharge from the movement of the earth's plates.
There is no scientific evidence to support the phenomena, but there have been plenty of reports of the lights happening throughout history.
Husband and wife Jamie and Emily Goddard, of Alexandra Terrace, in Lincoln, caught an image of lights on a mobile phone camera as they appeared above Drury Lane in the city at around 8.30pm on February 22.
Mr Goddard said: "It's the first time I have seen anything like this. It looked like a glow or a haze. It was like a street lamp in the sky.
"I am certainly not thinking its an alien spacecraft but I do think it's unidentified and unexplained. I would be interested to know if it is earthquake lights."
Dr Richard England, a lecturer in geophysics at the University of Leicester, has studied the picture and said he was keeping an open mind.
He said: "There have been observations of strange lights and animals behaving abnormally before earthquakes.
"Examinations after the earthquakes found they then stopped, so there may well be some link."