Upon further reading I found that the did not call the bomb squad or evacuate the school for the suspected hoax bomb. I assumed that out of an abundance of caution they would have called in the bomb squad and evacuated the kids from the school.
Especially since we know that terrorist bombers typically do not only place one bomb at a target, but several order to cause a maximum death toll.
That’s exactly my point and good on you for doing your own research. The question that needs to be asked is “if they really thought it was a bomb be why didn’t they call bomb squad, evacuate school etc...”?