The condition of the 35-year-old boyfriend - a street vendor named Ravi - is said to be stable after he underwent surgery.
"The victim told us that when they went into the washroom, the woman asked him to have sex with her". Ravi later told the police he had said his family was against it, and that was what caused matters to escalate. "He believed she was involved with someone else", said a senior police officer.
According to Times of India, woman's brother and sister-in-law, who were in the house at the time, saw Ravi being stripped and shoved into the bathroom. "She then brought back a knife and attacked me", said the man in his complaint.
When they returned, the woman asked her boyfriend to have sex which he refused.More news: Westbrook set to learn if his historic season was an MVP one
After Ravi refused once again, the woman chopped his genitals off with the knife, sending Ravi running from the house looking for assistance.
The victim is now admitted at the Jaipur Golden Hospital.
After the incident, a case under section 326 (voluntarily causing hurt by unsafe weapons or means) of Indian Penal Code was registered at the Mangolpuri police station against the absconding woman.
The officer said that police got a call at around 5 am on Thursday from the hospital authorities informing about the incident. However, the brother and the sister-in-law were found there when the police paid a visit on Saturday. The incident happened in Delhi's Mangolpuri area and according to reports, the woman has been absconding along with her family members since the crime.