Some say the unidentified phenomenon looked like a metallic object hovering motionless and without sound.
"At first it look like a circular tear in the sky," said Joshua Green, who lives on Rob More..inson Street.
"When the spotlights from the casino would rotate, they would hit the object . . . and it would illuminate the object and create a flash coming back down.
"I had never seen anything like that before."
I called my sister and told her to go outside and look at the sky. I called my father to see if he had any idea what might be. He went outside and said he's never seen anything like that."
A tourist said he and his wife were walking along Victoria Avenue near Clifton Hill when they noticed "everybody on the street was looking up in the night sky."
Scott Jordan wrote: "When the four search lights that light up the night sky (over Niagara Falls) came together it appeared like there was something in the sky and it was reflecting the light."
A Niagara Regional Police spokesman said Sunday afternoon he was unaware of any reports coming into police overnight.
Mayor Ted Salci was surprised to hear about the unusual incident, too.
Salci said if it was some kind of object, he doesn't know what it could have been.
What is going on in our world? Recently there has been an upsurge of UFO sightings. Is something big getting ready to happen? Look at the video below and tell me what you think.
