London, Sept 16 : UFO researchers are investigating an apparent alien encounter in Bristol that has been causing a stir.
People say that they had spotted 'bright orange lights' in the sky on the night of Sept 13.
According to reports, five 'fireballs' danced in the air for ten minutes before suddenly disappearing from sight.
Andrea Grayson has revealed that people flocked into the streets to witness the 'amazing display'.
"The first four came and seemed to wait for the last. Then they circled several times before disappearing," the Sun quoted her, as saying.
Roger Rosamon, of the British UFO Research Association, refused to comment until he had fully investigated.