 On August 21, insurgents killed Abu Ali Jassim, a Sunni sheikh who had encouraged many of his tribesmen to join the Iraqi Police.The insurgents hid the body in a field rather than returning it for a proper burial, violating Islamic law and angering Jassim's tribesmen.Following this, 40 sheikhs from 20 tribes from across Al Anbar organised a movement called the "Sahwa Al Anbar" (Anbar Awakening).