Footage has emerged that appears to show a Texas police officer repeatedly punching a 14-year-old girl in the face as her distraught mother screams in the background.
The grainy footage was shot by a bystander outside a traditional Hispanic birthday party in San Antonio late on Saturday after police were called when several men started fighting.
The teenage girl, who was in the crowd with her mother and brother, was arrested for allegedly assaulting an officer, the Daily Mail reported.
Footage appears to show the girl stepping toward the officer before he strikes her for the first time.
The officer can be seen lunging forward and delivering another blow, causing her to twist backward and fall into people standing nearby. He appears to hit her again before he and other officers grab her and arrest her.