NewsUS NewsU.S. ArmyOfficers inside the Pentagon were seen covered in chemical protective gear with multiple floors forced into lockdown over a 'hazardous materials incident'16:28, 11 Jun 2026Updated 16:51, 11 Jun 2026Multiple floors of the Pentagon have been plunged into lockdown with staff evacuated due to a "hazardous materials incident".‌Sources familiar with the matter said a number of corridors on floors two through five have been sealed off while a hazardous materials response team investigates.‌Police in the building have also been spotted wearing gas masks and are covered in chemical protective gear, a third source told CNN.‌Pentagon spokesman Sean Parnell confirmed that systems within the building, home to the US military headquarters in Arlington County, Virginia, "have detected an air quality issue" necessitating an evacuation "until we determine its significance."‌"The Department is executing standard protection protocols, including a shelter-in-place order for the affected area," Parnell added. "Response teams are in place and ready to support building occupants."A message sent by the Pentagon’s security team said an "air quality issue" had been detected and that additional testing is needed."This additional testing could take one to two hours. Response teams are in place and ready to support building occupants if necessary," the message said.Article continues below"You may observe response personnel from multiple agencies and precautionary measures taking place in the center courtyard. Please do not interpret these activities."Department spokesperson Captain Jamie Jill said a hazardous materials response team is responding to the incident along with the Arlington County Fire Department.Choose Daily Mirror as a 'Preferred Source' on Google News for quick access to the news you value.‌Breaking NewsU.S. Army