Personnel at Naval Base Guam were ordered to shelter in place after the installation received a bomb threat on Sept. 25, 2024. (Alex Wilson/Stars and Stripes)

Naval Base Guam lifted a shelter-in-place order three hours after it received a bomb threat around 12:15 p.m. Wednesday, according to a series of posts on the installation’s Facebook page.

Security personnel, emergency responders and Navy Explosive Ordnance Disposal Mobile units found nothing after searching several buildings, including three barracks, according to a 5:30 p.m. update.

“We treat all bomb threats seriously,” base commander Capt. John Frye said in the post. “We appreciate everyone’s patience as we executed pre-planned responses out of an abundance of caution to ensure the safety and security of the installation and its people.”

The threat was made via phone to the watch commander, naval base spokeswoman Theresa Cepeda told Stars and Stripes by email Wednesday. An investigation is underway, she said without specifying if a suspect was identified.

The shelter-in-place order was lifted at 3:05 p.m. and the base sounded “all clear” at 5:30 p.m., according to the social media posts.

Students at Cmdr. William C. McCool Elementary and Middle School were released for pick-up after the order was lifted, Cepeda said by email.