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Pentagon lockdown, evacuation update: What happened at US military HQ; first details

The Pentagon went on lockdown on Thursday while some floors were evacuated. CNN’s Haley Britzky reported on the issue and said on X “Multiple floors and corridors inside the Pentagon have been locked down and others are being evacuated, three sources familiar with the situation told CNN.”

An aerial view of the Pentagon, which houses the US Department of Defense headquarters, in Arlington, Virginia. (AFP)

Why Pentagon went on lockdown?

Arlington Fire & EMS confirmed the incident at the US military headquarters. They noted that there was an incident linked to hazardous materials.

“ACFD units, including our Hazardous Materials Team, are currently operating at the Pentagon in support of PFPA’s Hazmat Team during a hazardous materials incident,” the statement read.

The CNN reporter also noted Pentagon spokesperson Sean Parnell confirm that systems within the Pentagon had detected “an air quality issue necessitating precautionary measures until we determine its significance.”

Reuters reported the spokesperson say that the department was executing standard protection protocols and there was a shelter-in-place for the affected area. The Pentagon is the headquarters of the United States Department of Defense.

“Response teams are in place and ready to support building occupants,” the spokesperson further said.

A message was also sent from the Pentagon security team which said there was an ‘air quality issue’ and it needed additional testing, CNN reported.

“This additional testing could take one to two hours. Response teams are in place and ready to support building occupants if necessary. You may observe response personnel from multiple agencies and precautionary measures taking place in the center courtyard. Please do not interpret these activities,” the message read.

The publication noted floors two through five in corridors four through seven had been locked down, as per their sources. Police were reportedly seen wearing gas masks and full chemical protective gear.

(This is a developing story)