Force Rip was a Force power that could not be detected, not even by a master of the Force. Force Rip was created by the Phantom of Death, the most seduced Dark Lord of the Sith. A very advanced verson of Force choke, the user rips the organ inside the body out of its normal place, leaving no trace whatsoever of how it happened. Over 200 Jedi died because of this ability. Professor Gilad figured out that it was the Force that did it, not a weapon. The Force Rip is usually used on the lungs of people.