UPDATE: 9:45 p.m.: Fort Hood commander Lt. Gen. Mark Milley confirms the shooter and three others are dead. He said 16 are injured and being treated at Darnall and Scott & White. Milley confirms the shooter, whose identity he did not release pending notification of next of kin, was a combat veteran assigned to the 13th Sustainment Command and arrived at Fort Hood in February. He said the incident is under investigation, including the soldier's background.
Milley said the shooting began around 4 p.m. and responders were on scene within 10 or 15 minutes to engage the shooter.
UPDATE: 8:49 p.m. An announcement on loudspeakers at Fort Hood said the lockdown was over, and cars were seen leaving the post.
UPDATE: 8:04 p.m. A Killeen Independent School District spokesperson said students whose parents were unable to pick them up due to the lockdown are at their campuses being cared for by administration. Staff will care for students until a parent is able to pick them up. This applies to all KISD campuses on and off post.
UPDATE: 7:55 p.m Scott & White Memorial Hospital in Temple is currently treating 4 patients. They are not anticipating anymore patients at this time. Patients being treated have injuries to the chest, neck and extremities.
UPDATE: 7:47 p.m Four patients have been transported to the Scott & White Memorial Hospital in Temple and two more are in route. All patients are between stable and critical conditions.
UPDATE: 7:39 p.m Bell County deputies have been released from the scene, according to a spokesperson from the Bell County Sheriff’s Department. Fort Hood is holding a press conference at about 8 p.m.
UPDATE: 7:30 p.m. Ivan Lopez, 34, has been identified as the Fort Hood shooter, according to a Bell County sheriff's deputy outside of the Clear Creek gate.
Fort Hood officials have not confirmed this.
UPDATE: 7:02 p.m. The City of Killeen and Red Cross will open a shelter for anyone unable to return to Fort Hood while the lockdown continues. The shelter will open at 8 p.m. at the Killeen Community Center, 2201 E. Veterans Memorial Blvd.
UPDATE: 6:47 p.m. Scott & White Memorial Hospital in Temple has received three patients. At 7:45 p.m., hospital officials will hold a briefing at the Conference Center located at 2401 S. 31st Street, Temple, Texas
UPDATE: 6:32 p.m. Fort Hood's Directorate of Emergency Services has an initial report that a shooter is dead but this is unconfirmed.
The injured personnel are being transported to Carl R. Darnall Medical Center and other local hospitals. Numerous law enforcement agencies are in support and on the scene. The number of injured are not confirmed at this time. No further details are known at this time.
The post is currently still on lock down.
UPDATE: 6:26 p.m. Senior defense official: 1 dead, 14 injured in Fort Hood shooting, according to an Associated Press report.
UPDATE: 6:15 p.m.: Scott & White spokesman confirms the hospital is treating one person injured in the shooting. The person's condition was undetermined.
A Herald reporter confirms all vehicles leaving Fort Hood are being searched. Fort Hood expected to make official statement shortly.
UPDATE: 6:05 p.m.: Scott & White Hospital in Temple activated its internal incident management system and is preparing to receive and treat victims of the shooting.
Texas Department of Public Safety troopers are providing perimeter support around Fort Hood to help with the lockdown.
UPDATE: 6 p.m.: A III Corps spokesman said Fort Hood has not released any information about possible fatalities, though reports from local media and others on scene indicate there may be one fatality.
UPDATE: 5:45 p.m.: An Bell County Sheriff's Deputy told the Herald the shooter is trapped inside a building at Fort Hood and should be in police custody soon.
The FBI confirmed it responded to the incident and will help lead an investigation, a San Antonio FBI spokeswoman said.
UPDATE: 5:35 p.m.: Fort Hood officials released this statement: "There has been a shooting at Fort Hood and injuries are reported. Emergency crews are on the scene. No further details are known at this time."
At least two ambulances and other emergency vehicles were seen driving onto post.
UPDATE: 5:28 p.m.: Multiple reports that the shooting took place in 1st Medical Brigade building.
UPDATE: 5:25 p.m., Herald reporter Chris McGuinness from the scene reports multiple law enforcement agencies responding to the shooting.
UPDATE: 5:15 p.m.: Officials at Central Texas College canceled evening classes on its central and Fort Hood campuses and asked students and faculty to immediately evacuate the Killeen campus. Texas A&M University-Central Texas also canceled evening classes at its Fort Hood and Fairway campuses.
Multiple Fort Hood soldiers said the base is currently locked down with sirens going off amid reports of an active shooter.
"Fort Hood does have an active shooter on Post I do not have any further information. DPS and Bell County Deputies are responding," according to a statement from Bell County Sheriff's Department Lt. Donnie Adams.
1st Cavalry Division sent an alert on Twitter saying, "All personnel on Fort Hood should shelter in place immediately, close doors and stay away from windows."