The suspect received both inpatient and outpatient psychiatric treatment last year to help him deal with "fears of contact with others," Steinkraus-Koch added. He said medication had been found at his home but that investigators needed to talk with his family to determine whether he had been taking it.
https://www.yahoo.com/news/bavarian-official-says-military-aid-needed-time-crisis-102746745.html?ref=gs
A year to plan killing people at the mall, I mean pure genius...... for an idiot