WHAT WE KNOW ABOUT THE SHOOTER IVAN LOPEZ
Officials at Fort Hood have released few details about Specialist Ivan Lopez, but here's what we do know:
He is married, has other family members and lives in the Fort Hood area, having arrived at the post in February from another military base in Texas.
He was assigned to the 13th Sustainment Command (Expeditionary) at Fort Hood, which is a logistics and support unit.
He is a specialist, which is one of the four junior enlisted ranks in the US Army.
It is just above private first class and has an equivalent pay grade to a corporal.
Officials said he was not in the process of leaving the Army.
Lopez served for four months in Iraq in 2011. He was not wounded in action while serving overseas, but self-reported a traumatic brain injury upon his return to the U.S.
'He was not a wounded warrior,' said Lt. General Mark Milley, the senior officer at Fort Hood.
'He was not wounded in action, to our records, no Purple Heart, not wounded in action in that regard.'
Lopez had several mental health issues. He was taking medication and receiving psychiatric help for depression and anxiety and was undergoing a process to determine whether he had post-traumatic stress disorder.
'We do not know a motive,' Milley said. 'We do know that this soldier had behavioural health and mental health issues, and was being treated for that.'
Lopez had one weapon, a .45-caliber Smith and Wesson handgun, that was not registered with post authorities as required.
Authorities don't yet know how much ammunition he was carrying.
