During his trial for murder, defence witnesses provided evidence that Luka Magnotta had been diagnosed with paranoid schizophrenia as a teenager.[99] Defence expert Dr. Joel Watts testified that Magnotta showed signs of episodic schizophrenia (undifferentiated type), histrionic personality disorder, borderline personality traits and paraphilia not otherwise specified.[100] The prosecution revealed that Magnotta had been using illegal drugs during his teenage years which led to symptoms that mimicked schizophrenia and that Magnotta has been diagnosed with borderline personality disorder by Crown expert Dr. Joel Paris at Jewish General Hospital in Montreal in April 2012.[101][102][103] Dr. Renée Roy, the forensic psychiatrist who has been treating Magnotta at Rivières-des-Prairies Detention Centre since November 2012, through his preliminary hearing and right up to the murder trial, diagnosed Magnotta with borderline personality disorder with histrionic features.[104] Dr. Gilles Chamberland, another Crown expert who was not able to interview Magnotta, diagnosed Magnotta with anti-social, histrionic and narcissistic personality disorder.[105] A number of psychiatrists over the years noted that Magnotta displayed antisocial, borderline, histrionic, and narcissistic traits. The prosecution accused Magnotta of pretending to be schizophrenic since his defence pleaded diminished responsibility due to alleged schizophrenia.[106][107]