USA TODAY Network brings you the latest on the Fort Hood shooting which left four dead, including the shooter, and 16 wounded. Here's what we know so far:
How the scene unfolded: Lt. Gen. Mark Milley, head of the Army's III Corps at Fort Hood, said a shooter walked into a Texas building in the 1st Medical Brigade at about 4 p.m. Wednesday and opened fire with a .45-caliber semiautomatic pistol.
He then got into a vehicle, fired more shots from the vehicle, went to another building and began shooting, Milley said. Lopez was engaged by responding military police. A female soldier encountered the shooter in a parking lot, Miley said.
Lopez reached to pull out his weapon from under his jacket. The female shooter then pulled out her gun and "engaged" from about 20 feet away. Lopez then put the gun to his head and fired.
Victims: Three victims remain in critical condition with neck, spine and abdominal injuries respectively, according to officials at Scott & White Memorial Hospital. There is a possibility several may be released from the hospital today. Eight males and one female are being treated at the hospital. All are current military. Doctors said they do not expect more fatalities at this time.
Three died on Wednesday during the shooting. Sixteen are wounded.
Gunman: The Army said the gunman, identified as Spc. Ivan Lopez, was an Iraq war veteran who was being evaluated for post-traumatic stress disorder, but had not yet been diagnosed for the illness.
Lopez is from Puerto Rico. He spent nine years in the Puerto Rico National Guard as an infantryman, including a 12-month deployment to the Sinai, before going on active duty, said Army Chief of Staff Gen. Ray Odierno.
He was being treated for depression and anxiety. Lopez served four months in Iraq in 2011 but did not see combat. He had "self diagnosed" a traumatic brain injury." The motivation of the shooting is not known at this time. Lopez, who was assigned to the 13th Sustainment Command (Expeditionary), is married and has family.
The weapon: The 45-caliber Smith & Wesson handgun was not registered on base with post authorities as required. Military authorities do not know how much ammunition Lopez was carrying at this time.
