Security at U.S. bases worldwide will be reviewed, the Pentagon said on Tuesday, following the killing of 12 people in Washington at the tightly guarded Navy Yard a day earlier.
Investigators are working to uncover the motives of 34-year-old Aaron Alexis, a former sailor with a history of disciplinary problems, who eventually died in a shootout with police at the compound.
Alexis served in the Navy from 2007 to 2011, and it has been reported that his record was marked by numerous cases of misconduct.
Pentagon officials could not confirm if Alexis suffered mental health problems.
With lawmakers questioning the vetting of contractors, Defense Secretary Chuck Hagel “intends to order a review of physical security and access at all DoD (Department of Defense) installations worldwide,” a senior Pentagon official said, according to Agence France-Presse.
Federal authorities acknowledged that their probe had much to uncover.
“As we have moved from a crisis stage to the investigation stage of this case, our focus and efforts are going to be on the questions we all have,” said U.S. federal prosecutor Ronald Machen, according to AFP.
“What caused this individual to kill so many innocent men and women? How did he carry out and plan this attack? How did he get access to the weapons?”