Obviously had some mental issues, but that is still no excuse in my mind to take an innocent life, or several in this case. Accourding to news this morning killer had shown his recently purchased AK stlye rifle to his caretaker the evening before the shooting. She didn't think much of it as he was a nice and helpful person, but had some depression issues in the past.
I'm sorry, but if I knew someone that had issues with depression, had lost a girlfriend and a job all in one week like this killer did and then shows up with a rifle I would see a giant red flag!!!