False threat led to Naval Academy lockdown and then a mistaken shooting

ANNAPOLIS, Md. — A post on an anonymous chat platform triggered a lockdown at the U.S. Naval Academy this week, and authorities investigating what turned out to be a false report of a gunman then shot and injured a midshipman who had mistaken them as a threat, a military official said Friday.

The base that hosts the academy went into lockdown around 5 p.m. Thursday after it received a threat. However, the official said the threat wasn’t real — it came from a computer belonging to a former midshipman who was later confirmed to be in another part of the country. The official spoke on condition of anonymity to speak freely about an ongoing investigation.