Jyoti was a resident of Usman Pur area of Delhi and her husband, Raj Kumar, had passed away four years ago, SHO of Vijay Nagar police station Arun Singh said.
After her husband's death, Jyoti started living with her colleague, Yogesh, in Rahul Vihar area, the police officer said.
Last night, Yogesh returned home with his friends and had some argument with Jyoti.
Later, at about 2:30 AM today, Yogesh saw Jyoti's body hanging from the ceiling in another room and informed the police, he said.