The man accused of killing eight people and wounding several others in a mass shooting at a suburban Dallas shopping mall was discharged from the Army in 2008 because of mental health issues and apparently had been working as a security guard, according to neighbors and an Army official.

Authorities on Monday were trying to piece together what led to the attack Saturday in Allen, which ended when police shot and killed the suspected gunman, who was identified as 33-year-old Mauricio Garcia by the Texas Department of Public Safety.

Click for Full Text!