Vivek Singh, son of BSP legislator Chandraveer Singh, was in an inebriated state when the incident took place on Wednesday morning in the 24-year-old victim's home in Mehrauli, police said. The woman hails from Moscow and works as an intern with an architect in Gurgaon.
"The victim had met Vivek around a year back and became friends. Few months later they broke off their ties," said a police official, adding that the woman had returned to the capital early Wednesday morning from Moscow.
According to the police, Vivek was left red-faced when the woman took a cab to her home despite knowing that Singh had come to receive her at the airport.
Vivek then followed her to her home and abused her. He even threatened her with a revolver and finally left the place with her passport, mobile phone and her debit card, said police.
Vivek was earlier arrested in 2009 for opening fire inside Mocha Bar in Nehru Place, south Delhi, and was sent to Tihar Jail.