Here is what minor suicide belt looks like. As a rule it's yield is not more than half of kilogram of TNT.
If detained has it on belt or something similar and during the special operation he was injured (and nobody will let him surrender with such thing), control shots is going to be heard. Exactly the same shots as our former press-service employee (who had feared to participate in special operation and who came only when it was safe) is charging us with like it's some sort of proof of illegality of our actions.
Red arrow shows ring which activates IED.
Some questions from the comments to original post: