Transport Canada has confirmed that a drone was found near a runway at Trudeau Airport in September but authorities were never able to track down the owner.

Radio Canada says the incident happened September 13, was never made public and in fact Transport Canada never launched an official investigation because aside from the drone itself, there were no clues as to why the drone was there.

The drone was discovered by an airport worker to the side of Runway O6L which is a runway used for short take-offs and landings.

The network says in August several pilots reported seeing a drone just outside the airport perimeter as they were landing and taking off from one of the main runways.

But in that case as well, the operator was never found.