A skydiving plane carrying 20 people crashed shortly after takeoff from Tullahoma Regional Airport in Tennessee on Sunday.

Several people were injured, with four taken to hospitals—three by helicopter and one by ambulance—while others were treated at the scene.

No fatalities or ground injuries were reported.

The DeHaviland DH-6 Twin Otter plane struck trees and terrain due to an unknown issue, Fox News has reported.

The FAA and NTSB are investigating, and residents are urged to avoid the area.

Written by B.C. Begley