Police radio transmissions from the Newtown, Connecticut school shootings have not been officially released. However, transmissions posted on Youtube have been authenticated by police.
The chilling audio clips provide details to the tragedy last Friday at Sandy Hook Elementary school.
In the clips police race to the scene in response to panicked 9-1-1 calls from inside the school. The audio turns heartbreaking at police desperately call for more EMS personnel and ambulances.
These transmissions, along with eyewitness accounts will be instrumental in the investigation.