"Manoj has been arrested from Chiknauta village in Muzaffarpur district in Bihar late yesterday night," a senior officer told IANS.
The five-year-old rape victim was rescued by her family from her abductor's house in east Delhi's Gandhi Nagar area.
The victim is undergoing treatment at All India Institute of Medical Sciences (AIIMS) in New Delhi.
Girl's condition is stable, say doctors
The girl is responding to treatment, doctors said today, adding that her condition had stabilised.
"The girl is faring well, she is responding to treatment. She is now in a stable condition," DK Sharma, medical superintendent at AIIMS said.