One of six teenagers charged in the videotaped beating of a mentally disabled Philadelphia-area woman on her stoop last fall has been sentenced to six to 23 months in prison after pleading guilty in the case.

The Delaware County Daily Times ( http://bit.ly/UAQeCz) reports the 16-year-old apologized as she pleaded guilty Tuesday to charges of conspiracy to commit aggravated assault and conspiracy to recklessly endanger another person. A plea agreement calls for her to attend school and anger management classes.

Investigators allege the six female defendants - apparently for fun - punched, kicked and hit the 48-year-old woman with a shoe and a chair in Chester in September. One recorded the beating, which was posted online.

Cases against the five other defendants are still pending.

---

Information from: Delaware County Daily Times, http://www.delcotimes.com