Byline: Ali Hamdani in al-Haditha and Ned Parker in Baghdad

GRAPHIC accounts of the apparent slaughter of unarmed civilians have been obtained by The Times as Washington braces itself for the results of an investigation into what threatens to be the most damaging military scandal in Iraq.

On Saturday Iman Hassan, a 10-year-old Iraqi girl, told The Times how she had watched US marines kill her mother, father, grandmother, grandfather, four-year-old cousin and two uncles.

Residents in the insurgent stronghold of al-Haditha have now stepped forward to corroborate elements of Iman's story and to describe to The Times the murder of a second family, which included five children, the youngest of whom were two and three years old.

The events threaten to land a major blow to the US military's reputation in Iraq.

An official investigation has already resulted in the removal of Lieutenant-Colonel Jeffrey Chessani, the commanding officer, and Captain Luke McConnell and Captain James Kimber, two company commanders, from their duties in the 3rd Battalion, 1st Regiment of the 1st Marine Division.

Three marines are to face criminal charges, including homicide, while nine other marines may also face court martial, according to Pentagon sources.

Fallout from the inquiry, which is expected to be made public next month, is already being felt in Washington and the military establishment in Iraq. One US officer speaking anonymously in Iraq said what happened in al-Haditha was "clearly...