Pentagon on Lockdown Following Hazardous Materials Situation

WHO:

CNN - Pentagon spokesman Sean Parnell confirmed the incident.

CNN - Capt. Jamie Jill is a spokesperson for the Arlington County Fire Department.

WHAT:

CNN - Multiple floors and corridors inside the Pentagon have been locked down and evacuated due to a “hazardous materials incident.”

CNN - The Pentagon Force Protection Agency’s hazardous materials response team is responding to the incident.

CNN - Police in the building are wearing gas masks and full chemical protective gear.

WHERE:

CNN - The incident is occurring at the Pentagon, specifically on floors two through five in corridors four through seven.

WHEN:

CNN - Additional testing related to the air quality issue could take one to two hours.

WHY:

CNN - An “air quality issue” was detected within the Pentagon, necessitating precautionary measures.

HOW:

CNN - The Department is executing standard protection protocols, including a shelter-in-place order for the affected area.

CNN - Response teams are in place and ready to support building occupants if necessary.

(UPDATED June 11, 2026 16:22 UTC)

A hazardous materials incident has prompted the evacuation and lockdown of multiple floors and corridors at the Pentagon, specifically from the second to the fifth floors in corridors four through seven. Pentagon spokesman Sean Parnell confirmed that the Pentagon Force Protection Agency's hazardous materials response team is on the scene, with police donning gas masks and full chemical protective gear. Additional testing related to the air quality issue, which necessitated these precautionary measures, could take one to two hours to complete.