A viral video showing multiple people assaulting a girl has caught the attention of Chicago police.

The video shared on Twitter Monday evening shows a Facebook recording of several females approaching a girl and hitting her as onlookers laugh. The person who posted the video said the girl has a mental disability.

By Tuesday evening, the post had been retweeted more than 127,000 times, and the video had more than 3 million views.

Chicago Police spokesman Anthony Guglielmi shared the tweet Tuesday, adding that a criminal investigation has been opened.

“This is beyond disturbing to watch and this young girl deserves far better,” he said. “This clip has been forwarded to the #ChicagoPolice Special Victims Unit and a criminal investigation has been opened.”

Details about the incident weren’t clear.

WARNING: GRAPHIC VIDEO

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