Additional Sessions Judge Kaveri Baweja recorded the testimonies of Inspector Raj Kumar, the then SHO of Paharganj police station, and the investigating officer, sub inspector Puspa, who was the initial IO in the matter.
Deposing as a prosecution witness, Kumar said he had sent the material collected during the probe to the forensic laboratory.
The examination-in-chief of Kumar, recorded through special public prosecutor Atul Shrivastava, concluded while his cross-examination by defence counsel was deferred for the next date of hearing on November 24.
The court had earlier recorded deposition of a forensic expert who said that DNA profile of the accused persons had matched with the samples collected from the victim's clothes.
The charge sheet has said the nine accused, all vagabonds, had allegedly robbed and gang raped the Danish tourist at knife-point on the night of January 14 last year after leading her to a secluded spot close to the Divisional Railway Officers' Club near New Delhi Railway Station.
The nine accused, including three juveniles, were arrested. The three juveniles are facing an inquiry before the Juvenile Justice Board.
The six adult accused -- Mahendra alias Ganja, 24, Mohd Raja, 22, Raju, 23, Arjun, 21, Raju Chakka, 22, and Shyam Lal, 55, are in judicial custody and facing trial.
The nine accused have been booked on charges of gang rape and robbery or dacoity, with an attempt to cause death or grievous hurt under the Indian Penal Code.
Earlier, depositions of the victim and two Danish police officers, who had come to New Delhi in pursuance to summons, were also recorded by the court.
During an in-camera hearing on July 1, the woman had narrated to the judge the entire incident and identified three of the six adult accused as the ones who had gang raped her.
However, while deposing before JJB, she had turned hostile and failed to identify the three minor offenders.