UPDATED 10p, 4/2/2014

FORT HOOD, Texas (AP) — A Fort Hood official says the shooter in the attack at the Army base was being assessed for whether he had PTSD.

Lt. Gen. Mark A. Milley said Wednesday that four people were killed including the shooter and 16 others were wounded in the attack. He says the wounded were all military members.

Milley says there is no indication the shooting was related to terrorism.

He says the shooter is married and served in Iraq in 2011.

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The death toll in Wednesday's shooting at Fort Hood is now at four, according to ABC News. 14 additional people were injured in the incident at the Central Texas military installation.

The shooting victims were taken to different hospitals including, Carl R. Darnall Army Medical Center at Fort Hood and Scott & White Hospital in Temple.

Victims suffered from gunshot wounds in various parts of the body including the chest, neck and extremities.

Outside the base, some relatives of soldiers waited for news about their loved ones.

Tayra DeHart, 33, said she had last heard from her husband, a soldier at the post, that he was safe, but that was hours earlier.

"The last two hours have been the most nerve-wracking I've ever felt. I know God is here protecting me and all the soldiers, but I have my phone in my hand just hoping it will ring and it will be my husband," DeHart said.

In Chicago, President Barack Obama vowed that investigators will get to the bottom of the shooting, seeking to reassure the nation whose sense of security once again has been shaken by mass violence

In a hastily arranged statement, Obama said he and his team were following the situation closely but that details about what happened at the sprawling Army post were still fluid. He said the shooting brought back painful memories of the 2009 attack.

Fort Hood, was previously the site of a mass shooting in 2009, when Army psychiatrist Maj. Nidal Hasan killed 13 people. Hasan was convicted on murder charges in August 2013 and sentenced to death.

Information from the Associated Press used in this report

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