A leading member (2nd R) of the Police Department in Fallujah answers questions at a press conference jointly held by US-led coalition forces and Iraqi police in the Iraqi city July 12. The US troops have begun to transfer responsibility of security to the Fallujah Police Department after Iraqi police forces requested more authority in patrolling and securing the town. (Xinhua Photo)

A US military spokesman answers questions at a press conference jointly held by US-led coalition forces and Iraqi police at the Police Department of Fallujah, Iraq July 12. (Xinhua Photo)

Two Iraqi policemen guard the Police Department of Fallujah, about 50 kilometers west of Baghdad, July 12. US-led coalition forces and Iraqi police held a joint press conference Saturday. (Xinhua Photo)