The complainant and her schoolmate, who has been detained, both stay in Jamia Nagar and were reportedly in a relationship, a senior police officer said.
According to the complainant, the accused raped her, filmed the act and threatened to make the video public if she didn't accept his demands, the officer said.
The accused also allegedly took her to different places in the city and he, along with his friends, raped her on several occasions, police said.