mass killers

As North America and the rest of the world try to answer the question 'why' when it comes to the murder of innocent school children, current psychiatric research uncovers patterns to apparently random and motiveless 'mass' killings, which might reveal clues as to their impetus.In a paper just published in the academic journal Psychiatric Clinics of North America, entitled 'Mass Murder: Causes, Classification, and Prevention', Dr James Knoll from the Division of Forensic Psychiatry, SUNY Upstate Medical University, New York, reports the most up to date current psychiatric understanding of mass killers.
The new psychiatric report on the mental state of suspected terrorist Anders Behring Breivik released two days ago ensures his sanity will be the key issue in the forthcoming Norway massacre trial. Have the psychiatrists made the correct diagnosis of Breivik?