![](https://ichef.bbci.co.uk/news/1024/branded_news/101F5/production/_121473066_089dc074-3ba2-457f-9d4c-7cf764f4a5be.jpg)
In 2017 one psychiatrist, Dr Ken Ung, said that Nagaenthran suffered from a mild intellectual disability, attention deficit hyperactivity disorder and a drinking disorder – all of which would have “significantly affected his judgement [and] decision making”. In cross examination, Dr Ung appeared to contradict himself and said Nagaenthran could instead be suffering from borderline intellectual functioning.