"It was the nomal lighting of a public work.
But through the high-amplified monitor camera,
it became a surprising big light ball like a UFO.
(Video speed : 30X, it meens 6min image is 3hours event in reality)
depend on miffiokunTV, he (she?) asked and received an answer
from the Ministry of National Trafic, Kyushu section, Ookuma office.
They confirmed that their teams worked overtime till 22:00 on that night."
Found here:
http://www.youtube.com/watch?v=R8kgCEEJe0Y&feature=related