Iraqi police : says security forces were scouring the district of Falluja . U.S. military : Baghdad and area police participated in combined cache search . Anbar province is vast and violent because of U.S. and al Qaeda in combat zones .
Iraqi police official says security forces were scouring Sinaie district of Falluja . U.S. military : Marines and area police assisting in combined cache sweep . Anbar province is vast and violent scene of U.S. and al Qaeda in Iraq encounters .