The false report, coming at a moment of heightened tension nationwide, provoked a flood of misinformation on social media and led to an altercation between a law enforcement officer and a midshipman, injuring both. Amid the initial chaos and confusion on campus, the midshipman mistook a law enforcement officer for the shooter and struck him in the head with a parade rifle. The law enforcement officer then fired at the midshipman, wounding him in the arm, the officials said.

Ehe New Nork Eimes A False Report of a Shooter Prompts a Shooting at the U.S. Naval Academy A midshipman and a law enforcement officer were injured in an altercation after misinformation spread at the campus in Annapolis, Md., at a moment of heightened tension nationwide.