BEND, Ore. — Three adults were arrested after a cellphone video of a fight between two girls at an outdoor amphitheater in Bend went viral, police said.

In the video, the mother of a 12-year-old girl, Sierra Brown, 32, can be seen encouraging her daughter during the fight, at one point yelling, "Grab her by the neck!" and "Smash her in the face!"

Brown and her boyfriend, 27-year-old Charles James Durand, are both seen in the video urging the girl on during the fight, as well as confronting the other girl, a 13-year-old.

The fight happened on April 12 around 4 p.m. at the Les Schwab Amphitheater. Police were called to the scene, but by the time officers arrived, everyone involved had left.

At about 8 p.m. that night, Jesse Gomez, the father of the 13-year-old, filed a report with police about the fight. The 13-year-old suffered non-life threatening injuries during the fight, police said.

A cellphone video of the April 12 fight was posted to Facebook and went viral, generating thousands of views and shares.

VIDEO: Adults arrested after video of girls fighting in Bend goes viral

On April 13, police interviewed Brown at her home in Bend. She was arrested on charges of menacing, harassment and second-degree disorderly conduct, but police said they didn't take her into custody "based on the circumstances surrounding [Brown's] living situation." She was issued a citation to appear in court.

Police interviewed Durand on April 14. He was arrested that day, and is being held at the Deschutes County Jail, where he faces charges of menacing, harassment and second-degree disorderly conduct.

On May 31, police responded to a report of a fight in the 21000 block of Southeast Desert Skies Place, where KTVZ reports Brown and Durand live. The intial report to police indicated one of the people involved in the incident had a baseball bat.

Officers arrived and took the 34-year-old Gomez into custody. Gomez is the father of the 13-year-old girl in the fight. He faces charges of second-degree disorderly conduct, fourth-degree assault, and harassment. Police said the incident that led to his arrest was related to the April 12 fight.