Washington, Sept. 12 -- The US Naval Academy in Annapolis, Maryland, was put under a security lockdown after anonymous threats made on social media about an active shooter on campus, the New York Times reported, citing military officials.

NBC News reported that the threat was made by a student who had been kicked out of the academy. Several other local US media outlets also reported that the lockdown was in response to threats made against the academy, which officials said were not credible.

"There is no active shooter threat; however, one person was injured while Naval Security Forces were clearing a building," according to a statement from a Naval Academy spokesperson published by the USNI.

Gunshots were heard earlier inside Bancroft...