UPDATE: 5:40PM FORT HOOD, TX -  We're learning more about the man suspected to have killed twelve people and injured more than 30 others in a mass shooting this afternoon.

Major Malik Nadal Hasan specialized in mental health disorders, helping soldiers deal with combat stress. There's also word that he may have been preparing to deploy overseas. Hasan was shot and killed by authorities. Two other soldiers have been taken into custody and are considered suspects.

Military officials say the shooting spree started at a personnel and medical processing center. President Obama expressed his condolences shortly after the shooting happened.

The victims names have not been released, but one is identified as a Fort Hood civilian police officer. Injured victims have been taken to area hospitals. The identities of the two suspects in custody have not been released.

UPDATE 5:13 P.M. - FORT HOOD, TX - (AP) - A law enforcement official says a shooting suspect at Fort Hood has been identified as Army Maj. Malik Nadal Hasan.      

The official said Hasan, believed to be in his late 30s, was killed after opening fire at the base. The official spoke on
condition of anonymity because he was not authorized to discuss the case publicly.      

The official says investigators are trying to determine if Hasan was his birth name, or if he changed his name and converted to the Islamic faith at some point in his life.  

UPDATE 4:40 P.M. - The Fort Hood shooting suspect is Major Malik Nadal Hasan

UPDATE 3:50 P.M. - An Army spokesman says the gunman was kill and two additional suspects are in custody. The spokesman also confirmed that the incident occurred at the Army Readiness Center, a complex comprised of several buildings.

The U.S. Army spokesman also confirmed that the gunman was an Army Soldier.

The extent of injuries range from critical to minor and the current number of fatalities is at 12 with 31 wounded. Among the dead is a Ft. Hood civilian police officer.

We will continue to update this story as details become available.

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FT. HOOD, TX -  (AP) -- Seven people were killed and 20 wounded in a pair of shootings Thursday at the Fort Hood Army base in Texas, the Army says.

An army spokesman in Washington says the base has been locked down following the shootings. Another official told The Associated Press that at least one shooter had been caught.

The FBI is sending agents to the scene.

Army spokesman Lt. Col. Nathan Banks says the first shooting began at about 1:30 p.m. at a personnel and medical processing office. The facility, called a Soldier Rating and Processing center, handles administrative details for soldiers.

Banks says two shooters were apparently involved. There was no immediate word on who they were, nor on identities of the dead.

Banks says the second incident took place at a theater on the sprawling base.

Another Army official identified that site as the Howze Theater.

That official, who requested anonymity to discuss an evolving incident, said a graduation had been scheduled for 2 p.m. at the theater.

The White House said President Barack Obama was notified of the shootings.

UPDATE 4:55 P.M. - WASHINGTON (AP) - President Barack Obama says a shooting that has left at least a dozen people dead at the Army's Fort Hood is "a horrific outburst of violence." Speaking at an event at the Department of Interior, Obama says his immediate thoughts and prayers are with the wounded and the families of the fallen.

UPDATE: 8:45PM FORT HOOD, TX- A man suspected of of shooting dozens of people at the Fort Hood Army Post is still alive.

Earlier reports indicated that Major Nidal Malik Hasen was shot and killed shortly after using two handguns to kill 12 people and injure 31 this afternoon. Now, authorities say he is alive and in stable condition.

Federal law enforcement officials say Hasen came to their attention at least six months ago because of some internet postings about suicide bombings and other threats. At this time officials are trying to confirm that he wrote the posts.

Little explanation was offered by officials as to why the U.S. Army initially told media outlets that the suspected shooter was dead, other than there was confusion at the hospital.