Senior officials said that the remaining five accused in the case have also been identified and several police teams are raiding Uttar Pradesh, Bihar, Haryana and Maharashtra to nab them.

The Danish tourist, who had come to India on January 1, had first gone to Agra and returned to Delhi on Monday and checked in a Paharganj hotel.

On Tuesday, she went to visit a museum near Connaught Place but lost her way back to her hotel following which she approached the group of men asking for directions who waylaid her and then robbed and gang raped her for around three hours.

The victim, who had refused to undergo a medical test and left for Denmark on Thursday afternoon, had promised all possible help to the Delhi Police and agreed to return to depose in the case, if required.

"She may have left but we have got key scientific evidence in the case. In the hurry to flee, one of the vagabonds wore the victim's track pants while she wore his jeans, which will give us key DNA evidence to establish the perpetrators identity," said a police official.