CHICAGO — Two teenage boys who pleaded guilty in the sexual assault of a 15-year-old girl that was streamed live on Facebook have been sentenced to five years of probation.

In a plea deal with Cook County, Illinois, prosecutors, the teens pleaded guilty to child pornography in November.

The victim, now 16, and her mother looked on from the rear of the courtroom as Judge Patricia Mendoza sentenced the boys on Wednesday. Both teens were originally charged with aggravated sexual assault and manufacturing and dissemination of child pornography.

At the time of the crime last March, authorities said as many as six males assaulted the victim.

Police said the assault was watched live by about 40 viewers, none of whom called authorities to report the attack.