A Queensland police officer is under investigation after video emerged of him grabbing a girl in a school uniform in a heated argument.

The video, which was posted to Facebook, shows the sergeant trying to solve a "disturbance" in the small town of Murgon, 270k north-west of Brisbane.

"You're causing a disturbance on the street," the officer can be heard saying.

The officers grabs for the schoolgirl before she is knocked to the ground. (Facebook)

"I want you all to leave, move on," he said.

The officer then yells at a woman to stop swearing, before grabbing her and a girl in a school uniform, who both fall to the ground.

The officer then walks away and the crowd disperses.

The officer falls to his knees after trying to grab another woman in the bizarre altercation. (Facebook)

Queensland Police told 9NEWS the matter has been referred to the Ethical Standards Command and they wouldn't be commenting further.

It's not believed anyone was seriously injured.

He screamed at the group of people to leave after the violent altercation. (Facebook)