Counsel for the applicant in Criminal Motion No. 40 of 2016 (“Roslan”), Mr Kertar Singh, submitted that his client was a courier and denied that he gave instructions to another to retrieve and deliver the drugs. Mr Singh argued that his client suffered from an abnormality of mind as he had reduced intellectual functioning. He also relied on the experts’ opinion that his client had “limited capacity for judgment, decision-making, consequential thinking, impulse control and executive function” due to the underlying cognitive defects. The learned DPP, Ms Christina Koh challenged these findings on various grounds, such as the language used by the defence experts in conducting the psychiatric assessments as well as the limitations of the prison setting under which they were conducted. She argued that Roslan was within the borderline range of intellectual functioning, relying on the testimony of IMH psychiatrists, which she submitted was more accurate.