Authorities in Austin say they’re currently investigating a viral video showing officers taking the phone of a man filming police and then pepper-spraying him, KTBC News reports.

According to the witness who recorded the video, the incident took place early Sunday morning in Austin’s Sixth Street entertainment district. From NBC News:

The witness told NBC News said he he saw a lone police officer push through the crowd and tackle a single person. In the video’s caption the poster had said the person who was tackled looked “a little young to be drinking.”

After that person was arrested, “police pushed all back and started kicking people too close. Pepper spray/deterrent was used on bystander who was filming the incident, doing nothing,” the witness told NBC News.

On Sunday, officials told the network that “the Austin Police Department is aware of this incident, and they are conducting a review to determine if the officer’s conduct is compliant with our policy.”