It is interesting that the news focused on mental health and crime as opposed to what it most likely is: Islamic jihad.
What is the potential gain for a criminal to make a bomb in a store and detonate it?
Why go from clean shaven — as in the prison photos — to a mustache-less beard similar to that worn in the orthodox, Wahhabi or Salafist sect of Islam?
How can a person, thought to be legally insane, research how to make a deadly weapon and then go to a store and correctly assemble it all in a manner that would have caused great harm to all present had he been able to complete it?
This was jihad.