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Warning: this video is graphic.

Police in Columbia, S.C. arrested three people Monday in connection with a brutal mob beatdown of a 20-year-old woman by three other women.

The video is really hard to watch.

According to WTKR, the victim, who hasn’t been identified, “was hanging out taking in the sun with a co-worker when the three women attacked her, throwing her by the hair onto the ground.”

It’s not immediately clear why she was attacked and left on the ground bleeding. The victim was kicked and punched in the face and head repeatedly.

She sustained a broken nose and concussion as a result.

Arlinda Craft, 18, Anns Leigh Hill, 19, and Megan Williams, 20, have each been charged with second degree assault and battery by mob.