Pentagon is Locked Down - Here's What We Know
This is a developing story.
Multiple floors and corridors of the Pentagon were locked down and partially evacuated Thursday afternoon following the detection of an air quality issue that triggered a hazardous materials response, officials confirmed.
Pentagon spokesman Sean Parnell said building systems detected the issue, prompting standard precautionary protocols, including shelter-in-place orders in affected areas. Hazmat teams from the Pentagon Force Protection Agency and Arlington County Fire Department responded to the scene.
Sources told CNN that floors 2 through 5 in corridors 4 through 7 were among those impacted. Personnel were observed wearing gas masks and full chemical protective gear as testing continued. No specific substance has been identified publicly, and no injuries have been reported so far.
The incident remains under active investigation. Officials expect initial test results within 1-2 hours. The Pentagon, which houses the Department of Defense and thousands of military and civilian personnel, maintains robust detection systems for chemical, biological, and radiological threats.
This is a developing story. Updates will be provided as more information becomes available from official sources.