When Carnell and the others believed their plan was flawless and undetectable, little did they know that Voss had already noticed their every move!
It was not surprising, considering that the entire city was now under Rocky's control. Rocky's sole demand of Voss was to ensure the stability of the city, so Voss had always paid close attention to the disenfranchised nobles and officials like Carnell, having had them under surveillance for some time.
Moreover, with so many distinguished guests gathered in the city, security had been raised to its highest level. Not only had Monte and Liliya brought the entire Guard Corps with them, but Rocky even had the Sky Alliance dispatch a full ten squads of the Void Magic Squad to help maintain public order. With such measures in place, how could the actions of Carnell and his group possibly go unnoticed? They had, in fact, been detected long ago!