U.S. Marines in Iraq say two leaders of a militant group linked to wanted terrorist Abu Musab al-Zarqawi have been arrested.

The U.S. military, which announced the arrests Saturday, said Marines had captured the two cell leaders during raids in the city of Ramadi earlier this month.

The two men are accused of executing 11 Iraqi National Guardsmen, as well as planting bombs and smuggling foreign militants into Iraq.

The arrests came as rescue workers in Baghdad uncovered seven more bodies from the rubble of a Christmas Eve suicide bombing in the city's upscale Mansour district. The attack left nine dead.

Meanwhile, police in Najaf say at least three civilians were killed in a car bomb attack.

Some information provided by AP and Reuters.