The Unnao police booked Sengar under various sections of the IPC and provisions of the POCSO Act, but said the CBI will take a decision about his arrest.
The Union cabinet also decided to put in place measures for speedy investigation and trial of rape cases.
Two suspects have been arrested and police say the case is a fallout of a monetary dispute.
The bail plea of self-styled godman Asaram Bapu, accused of allegedly sexually assaulting a 16-year-old girl, was rejected on Wednesday by a Jodhpur court after the prosecution raised strong objection to setting him free.
There cannot be a 'blanket ban' on media reporting on cases of rape and sexual abuse, it said.
The accused Sunil Rastogi would come from UP to Delhi and look for lone minor girls, kidnap and take them to under-construction buildings or isolated locations, rape them and then flee the city.
In the video, which was allegedly shot and circulated by one of the accused, the Dalit boy can be seen sobbing and pleading for mercy.
"Today the country is moving forward from women development to women-led development," Modi said.
A total of 16,960 cases of crime against women and children, including 2,568 rapes, have been reported in the last one year in Kerala.
"We have no idea what is happening in reality shows when children participate. These kids are below 15 years. These reality shows are harming kids' psyche and their future, too. If they want to continue, then there has to be proper guidelines laid down by the government for them to follow."
Ten days after it came to light that a four-and-a-half-year-old boy inserted his finger and a sharpened pencil in the private parts of his classmate in a Delhi school, the girl's mother says the biggest hurdle in getting justice for her daughter is to battle the disbelief that she faces since the accused is so young.
'It is a retrogressive Act. It actually criminalises a child who needs care and protection.' 'I am sure the Delhi teenage rapist, if given the right process and input, would have reformed himself. Even now, if he is supported he will evolve himself.'
