A 21-year-old cook hailing from Assam was raped allegedly by a domestic help in south Delhi, police said.
The girl was raped on Wednesday allegedly by Mukesh (18), who was arrested in Saket where she was staying.
A medical examination confirmed rape.
The victim resides in a paying-guest facility and Mukesh resides in the same building on the second floor.
"The victim alleged that she was raped around 1 pm on Wednesday. She complained to her landlord," a senior police official said.