New footage has been released that shows how the deadly shooting in a Texas school unfolded.
Two teachers and 19 children were shot dead when Salvador Ramos targeted Robb Elementary School in Uvalde.
The leaked video shows the 18-year-old gunman strolling towards the building carrying an AR-15 assault rifle after crashing his pickup truck.
He casually enters the school and walks down a brightly coloured hallway just after 11.30am on May 24.
Moments later, a child is seen coming around the corner and running away.
Police officers are seen checking their phones, using hand sanitiser and stalling in the hallway for an astonishing 77 minutes in the clip.
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It also shows them running away from gunfire as Ramos shot more than 100 rounds at children in two classrooms.
Cowardly cops are seen restraining a fellow officer whose daughter was one of the 21 slaughtered in the massacre, footage from inside the building reveals.
Two officers appear to be holding sheriff's deputy Felix Rubio back by his shirt as the dad wipes away tears while gunman Salvador Ramos continues on his killing spree in a classroom down the hallway.
The devastated dad appears with his hand held over his mouth as he fears for the life of his ten-year-old daughter Alexandria Aniyah Rubio who was later found dead.
The shocking clip was first obtained by the Austin-American Statesmanand KVUE and allegedly shows how cops react during the shooting.
Officers arrive almost three minutes after Ramos started shooting in a classroom and are seen rushed towards the room, crouching down.
A disclaimer for the video reads: “The sound of children screaming has been removed. Authorities say more than 100 rounds were fired.”
Victims' families were shocked by the video and say that police could have done more to save lives on that tragic day.
The video has shocked the families of the victims who have been saying that the police could have done more to save lives on that day.
It has also been the source of political debate at the highest levels with Texas Governor Greg Abbott, Uvalde Mayor Don McLaughlin and Rep Dustin Burrows, who leads the Texas House investigative committee inquiry into the shooting, calling for the release of the video.
A young survivor earlier revealed how Ramos began playing "sad music" as he gunned down those inside the school.
The twisted teen shot his own grandmother at their Uvalde home before driving to the school to carry out the massacre.
Ramos had warned an online friend in Germany that he would "shoot up" an elementary school minutes before the attack.
In one message, he told how he was going to shoot his grandmother and later sent another to confirm he had done so.
Police were called by his grandmother who he shot in the face before fleeing the home they shared to carry out the school atrocity.
