"We've got rifles, gas masks and... an open door near the rear of the theatre."
"Behind the theater... a suspect in a gas mask"
Officials also released fire/EMS audio traffic, which document how the response unfolded.
In addition, early radio traffic from the Aurora cinema shooting that left 12 people dead and dozens injured has revealed how police officers were trying to save the lives of victims in the chaos that followed.
The audio, released by Denver Police, begins with the operator telling the units: "They are saying there is hundreds of people just running around."
As further details emergence, the operator says, "All units respond to the theatre."
One officer can be heard in the audio saying, "Somebody is spraying gas in here, too."
As police move into the theatre, the magnitude of the event is apparent. "I got a child victim I need rescue at the back door of theatre 9 now!" says one officer
The film is still playing as the officers move thorough the auditorium, with one officer saying, "I need someone to shut this movie off at nine. Have them shut this movie off at nine.
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