Multiple Pentagon floors locked down over 'hazardous materials incident'

A "hazardous materials incident" at the Pentagon Thursday has sent portions of the facility into a lockdown. Stream live video of the scene at Pentagon aboveThe Arlington County Fire Department in Virginia said its hazardous materials team was at the Pentagon due to the incident.Pentagon spokesman Sean Parnell told CNN systems within the Pentagon “have detected an air quality issue necessitating precautionary measures until we determine its significance.”CNN reports some corridors of the complex are being evacuated.“The Department is executing standard protection protocols, including a shelter-in-place order for the affected area,” Parnell said. “Response teams are in place and ready to support building occupants.”The Pentagon Force Protection Agency’s hazardous materials response team is responding to the incident with the assistance of the Arlington County Fire Department, according to the department spokesperson Capt. Jamie Jill. A post on social media from the Arlington Fire & EMS said Arlington County Fire Department Hazardous Materials Team is operating at the Pentagon “during a hazardous materials incident.”Floors two through five in corridors four through seven of the sprawling Pentagon complex have been locked down, two sources told CNN. A third source told the outlet that police in the building are wearing gas masks and full chemical protective gear.CNN contributed to this report