Police in the Indian capital Delhi are investigating whether a man recently arrested for the murder of a six-year-old girl is a serial child killer who may be involved in 30 such crimes. His family, however, alleges he is being framed, writes the BBC's Geeta Pandey in Delhi. Readers may find some of the details in this article disturbing.
Ravinder - who uses only one name - was arrested last week after the body of the six-year-old girl was recovered from an abandoned building just 50 yards from her home.
In the days since his arrest, he has confessed to dozens of sexual assaults and murders of children, giving "details of times and places of crimes".
At the Begumpur police station in West Delhi's Rohini area, Ravinder is brought in to talk to me. He is handcuffed and the metal leash is held by a policeman. He squats on the floor near me and starts to tell me how he picked up his six-year-old victim.