The girl was alone at her home when the accused Durga Munda entered the house and committed the crime yesterday. The incident came to light when she narrated it to her mother when she returned home at night, they said.
The police arrested the culprit after an FIR was lodged against the accused with the RIP police station this morning.
The girl was admitted to M G M Hospital for a medical check-up after being referred by Adityapur Primary Health Centre where she was admitted first.
However, the intervention of a senior district police official made it possible for the girl to get admitted to M G M Hospital at last, sources said.