Football fans Dave Harding and Liam Heeney captured the Unidentified Flying Object on a camera while taking a selfie outside Grimsby's Spider's Web pub, in Carr Lane.
Dave, 23, who works in security, said: "We took the picture and uploaded it to Facebook and it was one of our friends who noticed the strange object behind our heads.
"I can't say I believe in UFOs myself, but we took loads of photos that day and there was nothing on any of the others, so it's not like it could have been a mark on the lens or anything.
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