Police have arrested four of the six accused from Dakshinpuri in south Delhi while two are still absconding.
The arrested accused, have been identified as Akash (23), Deepak (20) and Aman (26). They have been booked for the offences of gangrape, kidnapping and under other relevant sections of the IPC.
The fourth accused identified as Rohit, who was also in the group when the woman was kidnapped from Defence Colony area, was arrested but was not booked for offence of rape.
According to police, the woman, a resident of Uttam Nagar, worked with an event management firm on contract basis.
The incident was reported to the police at 12.30 last night by an auto driver who was known to the victim. He had dropped her to Moolchand Hospital traffic signal at 10.30 pm yesterday and she had asked the driver to stay around so that she could return home in the same auto-rickshaw.
On returning to Moolchand Hospital traffic signal, the woman made a call to the driver who was barely a few meters away from her, police said, adding that suddenly a white Santro car came in which five persons were sitting.
"They pulled the woman inside the vehicle and sped away. The auto driver noted down the car's registration number and made a call to the police control room," a police officer said.
PCR van officials reached Moolchand flyover and took the driver with them and started hunting the car.
Police said after a few hours the woman was found lying on the roadside in Dakshinpuri area near Pushpa Bhawan.
She narrated the incident to the police and said she could locate the house where she was gangraped.
The woman along with a police team went to the house and found the same Santro car parked outside the building. Out of the six men, four were arrested from the house while a hunt is on for the remaining two.
Police said the woman's medical examination has confirmed that she was raped and further investigation is going on.