The Jipol (from Jihad Police) was a law enforcement and counter espionage organization of the Butlerian Jihad that was lead by Yorek Thurr under Iblis Ginjo. After the Honru Massacre, the failure was blamed on inaccurate intelligence. Grand Patriarch Iblis Ginjo assigned Yorek Thurr, an ambitious and intelligent young detective to investigate the matter. Thurr uncovered evidence that disloyal humans had been responsible for purposely supplying disinformation. That was the beginning of the Jipol.