Shooting at Fort Hood Base in Texas

A shooting Wednesday afternoon at the Fort Hood Army post has left multiple people injured, and the shooter is believed to be dead, post officials said. The post remains on lockdown.

NBC News reported that eight people were injured, four of them critically, and that the person who died is believed to be the gunman. Officials are still searching and clearing buildings at the post, but a military official told NBC News that the deceased shooter appears to be the only shooter.

The Associated Press, citing an internal memo from the Justice Department, reported that the Fort Hood shooter died of a self-inflicted gunshot wound.

The AP is also reporting, quoting a U.S. defense official, that there are 14 people who have been wounded in the shooting. The official spoke on the condition of anonymity because the investigation is still ongoing.

Fort Hood officials have confirmed that a shooting occurred at the post, though the post has not confirmed the number of people injured. Scott & White Hospital in Temple confirms they have a command center in place and are receiving patients from the post.

Just after 5 p.m. local time, the post tweeted that all personnel were being asked to shelter in place, close doors and stay away from windows.

The shooting is believed to have taken place at the Medical Brigade Building. Local NBC affiliate KCEN-TV reported there were also reports of victims at the Battle Simulation Center.

Officials with the Bell County Sheriff's Office and Texas Department of Public Safety are helping to secure the perimeter of the largest active duty armored post in the United States Armed Services.

Central Texas College's campus was evacuated due to the shooting, with all personnel and students asked to leave and all classes canceled.

In November 2009, 13 people were killed and more than 30 others injured when Maj. Nidal Hasan opened fire on dozens of people at the post. Hasan was paralyzed during an exchange of gunfire and, in late 2013, was sentenced to death.  He is currently awaiting execution.