Dozens of Ontario residents say they saw a flash of light in the sky or heard a rumble on Sunday afternoon.
Many of them took to social media or contacted the American Meteor Society to say they think a meteor streaked across the sky, but there is no official confirmation.
The society said on its website it's investigating the reports, which came in from various southern Ontario communities and parts of the U.S.
The meteor society posted one comment from a person who said he was from Toronto as saying it was brighter than a lightening bolt.
A Colbourg, Ont. woman tweeted tweeted that her house vibrated.
Dana Petrillo says her house vibrated and she thought at first there was an earthquake or explosion at first.