The body, which was found in the basement of a tower in ATS One Hamlet in Sector 104 around 2.30 pm on Tuesday, has been sent for post mortem and its result is awaited, they added.
The accused was also found bleeding from a cut on his vein that he had inflicted himself, the police said. He was rushed to a local hospital from where doctors referred him to MBS Hospital in Kota, they added.
Based on a complaint from the Indian-origin US citizen on Saturday night, an FIR has been registered against the accused under Section 376 (rape) of the Indian Penal Code at the Chanakyapuri police station, they added.