Excerpt:
A project looking at links between mental health and terrorism in three English cities has been expanded nationwide after it found a significant number of people referred to counter-radicalization programs suffer some form of mental illness.
Studies have suggested the prevalence of mental health issues among militants working together on major strikes is very low but a string of killings by so-called lone wolves has fueled concerns mental illness could be a factor behind some attacks.
Authorities say some of those involved in four attacks in Britain this year blamed on Islamist militants appeared to people who had self-radicalized via the internet and whose mental state had been questioned.