CHICAGO (CBS) — Three teenage boys stand accused of forcing a 16-year-old girl to perform a sex act on them in a stairwell at Lincoln Park High School.

As CBS 2’s Susanna Song reports, all three boys were in court Sunday, charged with misdemeanor sexual abuse.
They allegedly cornered the girl inside the school stairwell, and forced her to perform a sex act on them.

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Prosecutors and police say they convinced the girl to do this by threatening to beat up her friend if she did not comply.

Police say the incident occurred on Tuesday afternoon.

Jewvon Davis, 19, of the 1300 block of North Cleveland Avenue turned himself in to police and appeared in bond court Sunday. He was later released on $5,000 bond.

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Kenneth Esco, 19, of the 1400 block of North Sedgwick Street, is charged with a misdemeanor, as is a 17-year-old boy who is not being named because he is a juvenile.

Chicago Public Schools officials are aware of the incident at Lincoln Park High School, 2001 N. Orchard St., which draws students from the surrounding neighborhoods and is also known for its International Baccalaureate program for students from around the city.

School officials are working with police in investigating the incident.

There may have been a fourth boy involved, but it is not clear who he is.

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The Sun-Times Media Wire contributed to this report.