Indian police are questioning two men in connection with the rape of a four-year-old girl in the capital, Delhi.The city's deputy commissioner of police, Vijay Singh, told the BBC that no arrests had been made yet.
The child is in intensive care after being found unconscious by railway tracks on Friday night. She had surgery for extensive injuries, doctors say.
The attack raises fresh questions over women's safety in Delhi after a 2012 gang rape and murder shocked the world.
The girl, who was found near her home in a poor neighbourhood in the north of the city, was slashed and had severe injuries on her body.
Her family allege she was lured with an offer of food or sweets by a group of men.
Delhi commissioner for women Swati Maliwal, who visited the child in hospital, described her injuries as "horrific".
The gang rape and murder of a student in 2012 in Delhi led to protests and new anti-rape laws in the country.
However, brutal sexual attacks against women and children continue to be reported from across the country.
In 2014, a Delhi woman alleged that she was raped by the driver of her Uber taxi.
In July, police arrested a man who confessed to sexually assaulting and murdering 30 children from in and around Delhi.
More than 1,500 cases of rape have been recorded by the police this year but there are believed to be many others which go unreported