Don Enns, a regional manager at the independent Transportation Safety Board of Canada, told CTV and CP24 on Tuesday that "some sort of failure" inside one of the plane's two engines disrupted the airflow, causing part of the turbine section to fly out the back.

CNN: Engine malfunction caused plane debris to fall in Canada

Large chunks of Larson's car landed in the grandstands, and one of his tires appeared to fly over the fence and land midway up the lower section.

NPR: Fans Injured When Car Sails Into Fence At Daytona