Police are investigating a video of a man, believed to be an off-duty police officer, stoning a wombat on a remote road in South Australia.

The video, posted to the Wombat Awareness Organisation's Facebook page, shows a car slowly following a wombat down a dirt road on the Eyre Peninsula before it stops and a shirtless man gets out, giving a thumbs up to the camera.

WARNING: UPSETTING IMAGES

"Get up close," the driver says and the shirtless man picks up a stone and throws it into the wombat's side, causing it to run down the road.