Three people were cited for trespassing after a practice round was found in their vehicle at a gate Wednesday at Pearl Harbor, according to Fox News reporter Jessica Rosenthal.

The three individuals are civilians with “no military affiliation,” according to Joint Base Pearl Harbor-Hickam public affairs officials. The ordnance was not live, according to Rosenthal.

Earlier Wednesday, Pearl Harbor was locked down as a result of a bomb threat. There was no word whether these incidents are related.

Motorists were advised to avoid the area for more than an hour while base officials investigated.

A U.S. sailor shot and killed two civilian Department of Defense employees at the Pearl Harbor shipyard before taking his own life in December.

Joint Base Pearl Harbor-Hickam, one of the Navy's major installations, repairs, maintains and modernizes the ships and submarines of the U.S. Pacific Fleet, which is headquartered at Pearl Harbor. The base is the home port for 10 destroyers and 15 submarines.

The shipyard is across the harbor from the Pearl Harbor National Memorial, which recently marked the 78th anniversary of the Japanese attack that propelled the U.S. into World War II. More than 2,300 Americans died in the attack on Dec. 7, 1941.