The video, which was recorded in a hallway and obtained and edited by the Austin American-Statesman and KVUE-TV of Austin, shows the officers arriving at Robb Elementary School at 11:36 a.m. May 24, three minutes after the gunman was seen entering the school and walking down an empty hallway.
NBC News has not independently obtained the video, which provided the first view of a law enforcement response that a Texas public safety official has called an “abject failure.”
About 20 seconds after the 18-year-old gunman is seen entering the school, he turns to his left and opens fire on a classroom.
Authorities have said he fired at least 100 shots with an AR-15-style rifle into adjoining classrooms filled mostly with fourth graders.
Chillingly, a student who KVUE reported had been in the bathroom — and was just steps behind the gunman — could be seen in the video running from the gunfire after watching the initial burst of shots.
The American-Statesman reported that the student was rescued later.
About a minute later, after several officers approach the classroom, a second burst of gunfire can be heard, and an officer can be seen racing down the hall. Two others slowly follow him.
It isn’t clear what agencies the officers were from. Local, state and federal agencies involved in the response didn’t immediately respond to requests for comment Tuesday evening.