Isn't it true that the bomb squad would simply deactivate any additional bombs, rather than blow them up and lose the evidence which they'd provide intact as to who and what made the bomb?
Thus any explosions heard and felt would not be from any "induced detonation."
"Isn't it true that the bomb squad would simply deactivate any additional bombs, rather than blow them up and lose the evidence which they'd provide intact as to who and what made the bomb?"
Once upon a time, that would have been true. Not for many years, now, however. You may have seen a fairly famous photo of a French bomb expert showing a bomb he'd just disarmed; the one where just as the photographer snapped the shot, the bomb exploded. The photo shows a shower of debris that used to be his hand. (I tried to find the photo to link to, but no success. it's from the late 70's or early 80's, IIRC)
It is far too easy to put an anti-tamper circuit in a home-made bomb, and far too dangerous to risk trying to disarm them now.