- Matt Lambert, 55, identified as gunman after 1 killed and 4 injured in DC shooting CNN
- One dead, at least 4 injured during active shooting near Logan Circle NBC4 Washington
- Who was the Logan Circle shooter? Police say suspected gunman died while barricaded WUSA9
- Doctor identified as D.C. gunman who killed 1, injured 4 over building dispute NBC News
- D.C. gunman attributed attack to frustrations with building maintenance The Washington Post