Officials said there was "no active shooter threat" at the U.S. Naval Academy in Annapolis, Maryland, on Sept. 11 after authorities received reports of threats, prompting the school to be placed under lockdown.

The Naval Support Activity Annapolis (NSAA) and local law enforcement responded to reports of suspicious activity on the Naval Academy grounds at around 5:07 p.m. ET, according to the NSAA, which provides security and other support for the school. Earlier, the NSAA said the base was on lockdown "out of an abundance of caution."

In an update at 9 p.m. ET, the NSAA said further investigation revealed that there was "no active shooter threat," but one person was injured while Naval Security Forces were clearing a building. The person was transported from the facility in stable condition.

"We will provide updates as they become available," the NSAA said in the update on social media.

The Naval Academy is a four-year college that trains midshipmen to become officers in the Navy and Marine Corps. The academy, which has a total undergraduate student enrollment of about 4,400, is located in downtown Annapolis, about 30 miles southeast of Baltimore.

Lockdown comes after reports of threats at U.S. college campuses

The lockdown at the Naval Academy follows multiple reports of threats at college campuses across the country, including Historically Black Colleges and Universities (HBCUs) that were also placed on lockdown or closed on Sept. 11.

Alabama State University, Hampton University, Virginia State University, Southern University and A&M College, and Bethune-Cookman University locked down the morning of Sept. 11, each citing potential threats made against the campuses. Spelman College in Atlanta asked students and faculty to avoid campus and increased security measures due to a threat against nearby Clark Atlanta University.

Though the lockdown and shelter-in-place orders have been lifted, the schools have increased security and canceled classes for the remainder of the day out of an abundance of caution.

Florida A&M University later announced plans to cancel in-person classes and its presidential convocation due to the threats made against other HBCUs. While FAMU has not received any threats, the university said that, in an abundance of caution, it will suspend in-person classes for the evening of Sept. 11 and all day Sept. 12, and shift to virtual learning.

“We stand in solidarity with institutions currently under lockdown or threat and extend our support during this time,” the university said in an alert message.

Contributing: Mary Walrath-Holdridge and N'dea Yancey-Bragg, USA TODAY; Tarah Jean, Tallahassee Democrat

This article originally appeared on USA TODAY: No shooter threat found at US Naval Academy; 1 person injured during security sweep

Reporting by Thao Nguyen, USA TODAY / USA TODAY

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