It was initially reported that he had been involuntarily committed for mental health treatment in 2008 , which would have legally prohibited him from purchasing firearms .
Questions were raised about how Houser was able to obtain the gun used in the shooting .
It was initially reported that Houser had been involuntarily committed for mental health treatment in 2008 , which would have legally prohibited Houser from purchasing firearms .
Questions were raised about how Houser was able to obtain the gun used in the shooting .