Aniruddha Singh also cited a delay of eight months in lodging of the FIR to support his plea.
He filed the discharge application before Additional Sessions Judge D K Sharma, who presides over the special fast track court set up to exclusively deal with cases of sexual offences against women, saying it is unbelievable that a citizen of such an advanced country was so reluctant to lodge a complaint.
The court after hearing arguments listed the matter for further hearing on March 21.
The woman's advocate submitted that she was drugged and raped by the accused. Several date rape drugs are available in the market and the victims are unable to remember anything after being administered the medication, the counsel said.
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He also said there was no reason why a foreigner will falsely implicate the accused and that her travel expenses were borne by legal aid authority as she did not have the means to travel to India.
The defence lawyer claimed that the woman filed the case to get a compensation from the US authorites under the American law.
During the hearing, the court asked the woman's counsel to inform it on the next date of hearing as to when she can come to India for giving evidence.
The case was marked to the sessions judge today by the district judge after a magisterial court earlier took cognisance of the charge sheet.
All the four men have been chargesheeted for alleged
offences of gangrape, unnatural sex, causing hurt by means of poison and voluntarily causing hurt, criminal intimidation and common intention under the IPC.
The police had on December 26 last year arrested all the four in connection with the alleged rape of the woman.
The US national had arrived here last December to join the probe and recorded her statement before a magistrate saying she was raped by five men in the hotel.
Earlier, the complainant had said she was "not satisfied" with the probe and was ready to come to India to identify the accused.
The woman had alleged that she was raped by the men for two days and also threatened with dire consequences if she reported the matter to anybody.
She had also stated that the men had made videos of the act and threatened to make those public if she reported the matter. She had also told the police that the accused had claimed to have sexually assaulted a couple of other owmen tourists as well.