Washington Navy Yard shooting

2013 incident in Southeast Washington, D.C.

On September 16, 2013, Aaron Alexis, a lone man armed with a shotgun, killed twelve people and injured fourteen others in a mass shooting at the headquarters of the Naval Sea Systems Command (NAVSEA) inside the Washington Navy Yard in Southeast Washington, D.C.[1][2][3] The attack happened at around 8:20 a.m. in Building 197. Alexis was shot dead by police after he shot at them.

It was the second-deadliest mass murder on a U.S. military base after the Fort Hood shooting in November 2009, and the deadliest mass murder in the Washington metropolitan area since the September 11 attacks in 2001.


  1. "At least 13 dead in Navy Yard shooting; possible suspect at large". The Washington Post. Retrieved September 16, 2013.
  2. Richard Simon, David S. Cloud, Brian Bennett (September 16, 2013). "At least 12 dead in Washington Navy Yard shooting". Los Angeles Times.{{cite web}}: CS1 maint: multiple names: authors list (link)
  3. Adam Gabbatt (September 16, 2013). "Navy yard shooting: DC police confirm 12 dead including gunman". 'The Guardian.