Chicago police arrest boy, 14, in connection with Facebook Live sexual assault of girl, 15

Police say they expect to arrest more males in connection with the rape.

"Tonight, CPD arrested 1st of several juvenile offenders in Facebook sexual assault incident," tweeted Chicago Police Department spokesman Anthony Guglielmi.

"Additional arrests are expected as the investigation continues," Guglielmi said.

It is believed that up to six males were involved in the assault of the teen, a freshman at Chicago's Lake Tech High School who has received online harassment, according to ABC affiliate WLS.

The Facebook Live video of the incident -- which occurred March 19 -- was viewed by at least 40 people, but none of them called police, reported WLS.

The victim's mother contacted police after her daughter had been missing for a day.

Police Superintendent Eddie Johnson will provide more details at a news conference Sunday at 11 a.m.