The attack — livestreamed on the social network — was viewed by about 40 people, none of whom called the police.
Facebook Live has been used to broadcast dozens of acts of violence, including murder.
A 14-year-old boy has been arrested in connection with the sexual assault last month of a 15-year-old Chicago girl that was livestreamed on Facebook Live.
The unidentified suspect faces felony charges of aggravated criminal sexual assault, manufacturing of child pornography and dissemination of child pornography, police said Sunday during a news conference. More arrests are expected in connection with the attack, which was viewed as it happened by about 40 people, none of whom reported it to police.
„It disgusts me. It makes you wonder, what are we doing as a society, that people watch this and don’t pick up the phone and alert police,“ Chicago Police Superintendent Eddie Johnson said Sunday.