Apparently the killer had been diagnosed with Aspergers according to ABC news (http://abcnews.go.com/US/suspect-uc-santa-barbara-shooting-identified-family/story?id=23853918). If I recall, didn’t the Connecticut school killer also have Aspergers? Hmmmmm. If it was not the Connecticut kid, it was another recent mass killer.
Yep, it was Adam Lanza, the Newtown killer, who also had Aspergers Syndrome. http://www.telegraph.co.uk/news/worldnews/northamerica/usa/9747682/Connecticut-school-shooting-troubled-life-of-Adam-Lanza-a-fiercely-intelligent-killer.html
Below is the link to the Google search re a link with Asperger and mass killers.