Two law enforcement officers told ABC News that after stabbing the officer, Lanz disarmed him and shot him with his own gun. The officers fatally shot Lanz in response to the attack, however, it is unclear whether the suspect shot himself or was killed by responding officers. Lanz was detained earlier this year after purportedly enlisting in the US Marine Corps in 2012 and being “administratively separated” barely a month later. According to online court records obtained by AP, Lanz was arrested in April in Cobb County, Georgia, on criminal trespassing and burglary charges. On the same day as his...