A shooting has left at least four people dead, including the gunman, and 16 injured at a US Army base in Fort Hood, Texas

A shooting has left at least four people dead, including the gunman, and 16 injured at a US Army base in Fort Hood, Texas.

“A soldier with mental health issues killed three people and wounded 16 before turning the gun on himself Wednesday at Fort Hood,” the US military base devastated by a deadly 2009 shooting rampage.
  
Base commander Lieutenant General Mark Milley said the gunman, who served in Iraq in 2011, was being treated for depression and anxiety, and being checked for possible Post-Traumatic Stress Disorder (PTSD).
  
All of the dead and wounded were military personnel. At least four of those injured were hospitalized in critical condition. "At this time, there is no indication that this incident is related to terrorism, although we are not ruling anything out," Milley told reporters at the sprawling US army installation in Texas. "We do not know a motive. We do know that this soldier had... mental health issues, and was being treated for that."
  
The incident sparked memories of the November 2009 shooting at Fort Hood, when Major Nidal Hasan opened fire at the base, killing 13 people and wounding more than 30 others.

President Barack Obama said he was "heartbroken something like this might have happened again," and pledged that investigators would "get to the bottom of what happened." "Obviously, this reopened the pain of what happened at Fort Hood five years ago," Obama said.
  
"Many of the people there have been on multiple tours in Iraq and Afghanistan. They serve with valor, they serve with distinction. At when they're at their home base, they need to feel safe."
  
Obama convened a conference call later with Defense Secretary Chuck Hagel, FBI Deputy Director Mark Giuliano and other leaders from Air Force One, as he was returning from Chicago to Washington, the White House said.