The graphic attack, which took place Thursday night, was caught by an eyewitness on cellphone video.
(WARNING: Video is disturbing)
In the video, a woman is repeatedly hit and kicked as she lies crying and screaming on the ground.
Screams can be heard from several people outside a local restaurant and bar pleading with the suspects to stop. One of the suspects can be seen hitting the victim with a skateboard.
Investigators say Charles Rayner is one of the men who beat the victim.
Two other people were also hurt.
Police arrested the 18-year-old on Saturday and set his bail at $30,000. His next court date is scheduled for April 23.
Anyone with further information was urged to contact police.