Ram Singh, the main accused, Pawan Gupta and Vinay told Metropolitan Magistrate Pawan Kumar they repented their act. "I do not want to take part in the test identification parade as I am involved in the crime and remorseful of that," the three said.
Pawan and Vinay also said they had committed a heinous crime and pleaded for death penalty. The three suspects were sent to 14 days in judicial custody.
The judge warned the suspects their refusal to undergo a test identification parade could be used against them during the trial and adverse inferences could be drawn from it.
Only two suspects have agreed to a test identification parade. One of them, who is a juvenile, will go through the process on Monday and Akshay Thakur, the other, on Wednesday. Akshay was arrested from a Bihar village last Friday.
Mukesh Singh, the sixth suspect and Ram Singh's brother, has been identified by Amanat's friend, who was travelling with her in the bus in which she was gang-raped on the night of December 16.
All the suspects face charges of gang-rape, kidnapping, unnatural offences, hurting in committing robbery and common intention under the Indian Penal Code.
A lawyers' outfit at the Saket district courts passed a resolution urging advocates not to represent any of the suspects in the case.
(With PTI inputs)