Darth Vader, running out of Jedi to hunt, turns on two Inquisitors and hunts them amidst Coruscant’s busy sky lanes. Why them? Maybe because he saw them developing feelings towards one another and that’s a no no for being in the Inquisitorious. As a finishing touch, Darth Vader makes them kill each other with their lightsabers.
From – Darth Vader Vol. 2 #20