Thousands of U.S. and Iraqi troops have fought their way into Fallujah's northwestern Jolan neighborhood, the heart of Iraq's insurgency, and now control about 70 percent of the entire city.
U.S. military officials say 11 American troops and two Iraqi soldiers have been killed since "Operation Dawn" was launched Monday to retake the city, which has been a terrorist haven. There are no confirmed figures for enemy casualties.
By this Wednesday morning, American military commanders said they had regained control of the mayor's office, key bridges, government buildings and mosques.
Resistance has been relatively light, but there are still small pockets of fighters resisting. U.S. and Iraqi troops are expected to continue to face difficult urban battles and streets booby-trapped with explosives.
Information for this report is provided by AP, AFP and Reuters.