"The woman, a mother of two, is in a live-in relationship with a friend in Dwarka. She told us that three men known to her came to her house on Monday evening," a senior police official said.
"While talking to them, she got soft drinks for them and herself. When she went inside they mixed some sedative in her drink," he said.
After consuming the drink, she fell unconscious, and was allegedly raped by the three men, according to the complaint.
However, the officer said that the mobile tower locations of all the three accused were found to be in some other areas during the time of the incident.
We are probing the case from all angles, the police said.