News report you were never meant to see

Using audio enhancement software, you can clearly hear someone say the following words into his ear piece:

"Tell them NO radiation..."

Something HUGE is about to happen, folks. Why would a driver in a "minor" fender bender" flee the scene, leaving behind an empty box emitting high levels of radiation that were then told to be "normal"? And why was this story given immediate news coverage if it was only a minor accident?