The Pentagon was locked down Thursday morning due to a suspected hazardous materials incident.

A report fromCNNsaid the incident was a false alarm, citing sources it did not name.

The report said some floors and corridors had been evacuated.

Other parts of the Pentagon, listed as “floors two through five in corridors four through seven,” were on lockdown, according to CNN’s sources.

CNN reported that police who entered the building “wore gas masks and full chemical protective gear.”

“The Pentagon has sophisticated systems to ensure the safety of the building and its occupants,” Pentagon representative Sean Parnellposted on X.

“Those systems have detected an air quality issue necessitating precautionary measures until we determine its significance.”

The Pentagon has sophisticated systems to ensure the safety of the building and its occupants. Those systems have detected an air quality issue necessitating precautionary measures until we determine its significance.

The Department is executing standard protection…

— Sean Parnell (@SeanParnellASW)June 11, 2026

Source: VidNews » Feed