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Officials with the Tucson Police Department say it could be weeks before the results of an internal investigation of Saturday’s confrontation with University of Arizona students are known.

The review was launched in part due to a video that surfaced of a police officer allegedly shoving a young woman to the ground. The footage has led to public complaints about police aggression during the encounter.

The incident occurred following the Wildcats' loss to Wisconsin during the NCAA Tournament, when hundreds of students flooded University Boulevard after the game.

Many reports describe the crowd as calm. Police say officers were pelted with beer bottles, firecrackers and other projectiles.

That's when a bystander recorded what appears to be an officer knocking a woman to the ground. National media outlets picked up the footage after it was uploaded to YouTube. That video has since been taken down from the site.

Tucson Police Chief Roberto Villaseñor said his department is investigating the officer’s actions. He explained, “The tactic he used was the tactic we train with to move people back. What’s going to be questioned is his judgment in using that tactic at the particular moment in time.”

Villaseñor said the department will review video from cameras located on officers’ uniforms that night. He also asks the public to submit any footage they have of the incident to police.