NEW YORK-Federal prosecuters in New York have asked a judge for a hearing to determine whether Aafia Siddiqui, a Pakistani neuro-scientist who is accused of attempting to kill US interrorgators in Afghanistan, is mentally ill and therefore unfit to stand trial. The prosecutors made their request on Monday in a six-page letter to Judge Richard Berman of United States District Court, citing the results of a recent psychiatric examination of Ms. Siddiqui, 36, and her refusal to cooperate with doctors or to even appear in court, according to a report in The New York Times on Tuesday. 'The govt believes that a competency hearing and complete psychiatric examination of the defendant is warranted', prosecutors with the office of United States Attorney Michael Garcia wrote to the judge. Garcia's office added that 'in an abundance of caution', the best course for the court was 'to find that there is reasonable cause to believe that the defendant may be suffering from a mental illness or defect rendering her incompetent to enter a plea or stand trial'. Ms. Siddiqui has been held without bond since she was brought to the US from Afghanistan, where the authorities claim she shot at American soldiers who had gone to interrogate her after she was taken into custody in July. Prosecutors have said that she was found loitering outside a police station with suspicious items in her handbag, including materials that hinted at a plan to attack landmarks in New York. This month, Siddiqui refused to appear in court for a hearing; her lawyer said. She was refusing to submit to a humiliating strip search, which is required of prisoners when they are taken to the court. Along with that refusal, prosecutors wrote to Judge Berman in the letter that Ms. Siddiqui has been 'completely uncooperative, not only with the court but with prison officials, including medical, psychiatric and psychological personnel'. A prison psychiatrist did carry out a limited examination and in a report to the court, found that Ms. Siddiqui had 'depressive type psychosis', the letter said. But the diagnosis was based on a limited interaction with Ms. Siddiqui, prosecutors noted. They said she had refused to speak with the psychiatrist or answer the psychiatrist's questions about her sleep and appetite, to continue the interview. Since that time, the prosecutors wrote, Ms. Siddiqui 'has continued to refuse medical and mental health aid'. Siddiqui's lawyer, Elizabeth Fink, has also written to the judge about her client's mental state, citing what she called 'the urgent need to treat her in a hospital setting'. In a letter last week, Ms. Fink wrote that the initial records from the Metropolitan Detention Center in Brooklyn, where her client is being held, 'document a severely disturbed and tormented woman, who is suffering from hallucinations and who needs immediate treatment in a psychiatric hospital'. Judge Berman is expected to take up the matter in a court hearing later on Wednesday(today).