A police officer in McKinney, Texas, was placed on administrative leave after a video went viral showing him detaining, handcuffing and physically holding a 15-year-old black teenager to the ground.
Police were called in after neighbours were concerned about a large group of black children who were partying in the predominantly white neighbourhood.
The video uploaded to YouTube has received hundreds of thousands of views, causing outrage at a time when the US has been embroiled in national debate about policing and use of deadly force, especially against minorities.
The video shows black teenagers trying to intervene in the arrests of other black teenagers and the cop drawing his weapon, chasing after two young black men.
After the two African American young men fled the scene, the cop returned to a teenage girl in a bikini. Forcing her face down and sitting on her back, the officer is then seen handcuffing her as she cries.
The officer has been identified by local media as Eric Casebolt, although McKinney Police Department has not disclosed his name.
A statement issued by the department said that the officer may face disciplinary charges.
The statement also claimed that police responded to a “disturbance at the Crag Ranch North Community Pool” since there were many juveniles at the location “who do not live in the area or have permission to be there, refusing to leave.”
It is not known yet whether the teenagers intruded in the party, but a local reporter said the pool party was open to the public.