Two teenage girls in southern Maryland bullied an apparently autistic 16-year-old boy into performing sexual acts and crashing through pond ice in episodes they captured on cell phone video, authorities said Wednesday.

The girls, ages 17 and 15, threatened the intellectually disabled victim with a knife, kicked him in the groin and dragged him around by his hair, said St. Mary's County Sheriff's Office Sgt. Cara Grumbels. They coerced him into walking on a partially frozen pond and then refused to help him out of the frigid water, she said.

https://www.cbsnews.com/baltimore/news/2-md-girls-charged-with-sexually-abusing-autistic-teen-boy/