One of them has been booked on rape charge also.
Lasudia Police Station in-charge Narendra Gaharwar said Suraj (20), Deepesh (21) and Ritesh (22) were booked on a complaint filed by the 17-year-old victim yesterday.
They have been charged with abduction and under relevant sections of the IT Act. Deepesh, in addition, faces sexual assault charge, he said.
In her complaint, the girl said she was was on her way to a coaching class on January 30 when the trio (who apparently knew her) convinced her to join the birthday party of their friend.
Ritesh then demanded Rs 50,000 from the girl's family and threatened to upload the clip on Internet if the money was not paid.
Fed up with his threats and constant harassment, the girl and her family lodged a police complaint.