Kingsport Police have released initial findings from an investigation of the I-81 South crash that occurred Saturday evening.

The report states four separate tractor-trailers were driving in a line in the right lane when road conditions ahead required the first driver to brake.

The report reads as follows:

1. Vehicle #1 slowed suddenly due to the actions of other traffic ahead.
2. Vehicle #2 slowed behind it.
3. Vehicle #3 was unable to stop and rear-ended vehicle #2, knocking it forward into vehicle #1.
4. Vehicle #3 then jack-knifed across the roadway.
5. Vehicle #4 was unable to stop and ran into the jack-knifed trailer of vehicle #3.

The report says the drivers of vehicle #1 and #2 were treated for minor injuries, with the driver of vehicle #3 being airlifted by WINGS Air Rescue for “suspected major injuries.”