A teenager, who was raped before she was set on fire on the roof of her family's home, has died of her injuries in a New Delhi hospital, Indian media reports.
The 16-year-old had been fighting for her life after suffering more than 90 percent burns in Monday's attack, which occurred in a village outside the capital.
The Indian paper Hindustan Times identified the suspect as Ajay Kumar and quoted police as saying that he would face murder charges.
Media reports quoted the girl's father as saying a neighbour in their village in the northern state of Uttar Pradesh had been harassing his daughter for a year despite several warnings.
The attack is just one of several recently reported cases of rape against women or children in India - underlining the persistence of such violence despite a public outcry three years ago that led to stronger laws to prevent sexual assault.
India's women and children are considered particularly vulnerable to sexual violence and harassment because of widespread social taboos against speaking about sexual assault.
The stigma is enough to keep many from even reporting crimes, while many others face police resistance in filing complaints.