You can now read 10 articles in a month for free on BostonGlobe.com. Read as much as you want anywhere and anytime for just 99¢.

The Boston Globe

Nation

Navy Yard gunman kept security clearance

Ex-reservist had series of run-ins with police, Navy

WASHINGTON — Despite being treated by the Veterans Affairs Department for psychiatric issues, no red flags were raised that might have prevented Aaron Alexis from entering the Washington Navy Yard on Monday and gunning down 12 people.

There is a growing list of questions about how Alexis, who had a history of infractions as a Navy reservist, mental health problems, and run-ins with the police over gun violence, gained and kept a security clearance from the Defense Department that gave him access to military bases, including the Navy Yard, where officials say he opened fire before being killed in a gunbattle with officers.

Loading comments...

You have reached the limit of 10 free articles in a month

Stay informed with unlimited access to Boston’s trusted news source.

  • High-quality journalism from the region’s largest newsroom
  • Convenient access across all of your devices
  • Today’s Headlines daily newsletter
  • Subscriber-only access to exclusive offers, events, contests, eBooks, and more
  • Less than 25¢ a week