A Porter Airlines aircraft had to suddenly maneuver in order to avoid a UFO over Lake Ontario.

The aircraft was carrying 54 people on board, as two flight attendants suffered minor injuries.

The aircraft was descending into Billy Bishop Toronto City Airport when it encountered the UFO at around 9,000 feet.

“The pilots noticed an object in the distance (and) as they approached the object, they realized it was very close to their flight path,” Porter Airlines said in a statement, according to the Canadian Press.

The object was thought to be a balloon, but after the pilots were debriefed, it could have been a drone.

Nobody knows at this point. It happened so quick,” Peter Rowntree, senior regional investigator with the Transportation Safety Board of Canada, told The Star. “It definitely wasn’t a bird. It was a fairly large object.”

Drones have been an issue worldwide, especially around airports. The Canadian government is working to pass new rules to keep instances such as this from happening.

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