story here from a British newspaper
Update: good point by commenter jafapete:
"Is it real? Let's see, a group of young people, lots of spare time on their hands, a few seconds of pictures only, hard to see in the dark..."
I had originally been struck by the statement of one of the teens that someone had been frightened so bad he had been admitted to a hospital-but i realize now perhaps he made that up as well.