An 18-year-old turned herself into Greenwich police on a breach of peace charge.
Police say Kayleigh Cajas was involved in an assault that took place in April at the Byram Park.
Video of the incident went viral after the victim was seen saying hit me again followed by a racial slur while a group of people looked on cheering and recording on their phones.
Multiple juveniles have also been charged in connection with this case.
Cajas has been released on a $10,000 bond.