Police sources say the man was a driver with Uber, the popular app that supplies taxis to users. However, a police case or FIR filed on Saturday evening does not mention the popular service.
The 27-year-old woman, who works with a finance company, hired the cab in Gurgaon near Delhi on Friday night after dining with friends.
In a statement to NDTV, Uber said, "We became aware of the incident this morning. Safety is Uber's highest priority and we take situations like this very seriously. We are working with the police as they investigate, and will assist them in any way we can to determine what happened." (Read Uber's Statement)
Later, Uber tweeted:
We are deeply disturbed by the reported incident. Our thoughts are with the victim. We are actively and fully cooperating with authorities.- Uber Delhi (@Uber_Delhi) December 6, 2014
Medical tests have confirmed the financial executive was raped, said police sources.
She told the police that the driver then dropped her near her home in north Delhi after threatening to kill her if she spoke of the matter to anybody.
"The woman clicked a photograph of the car's number plate and then made a PCR call to report the incident," a police officer said.
When an Uber driver is requested via its app, the user is shown a photo of the driver along with his phone number when he is en route. In this case, the suspect's phone was allegedly not registered in his own name. Uber uses GPS installed on drivers' phones to track their locations, but the driver had switched off his phone. (Read: How Uber Tracks Where Driver And You Are)