KABUL, Afghanistan - The U.S. military said Sunday it has new evidence about civilian casualties from an American attack that Afghanistan says killed scores of women and children and it is sending a senior officer to the country to review its initial finding that no more than seven civilians died.

The military did not say what new information had emerged. But Afghan and Western officials say Afghanistan's intelligence agency and the U.N. both have video of the aftermath of the Aug. 22 airstrikes on Azizabad village showing dozens of dead women and children.

"In light of emerging evidence pertaining to civilian casualties in the August 22 counter-insurgency operation in the Shindand District, Herat province, I feel it is prudent to request that U.S. Central Command send a general officer to review the U.S. investigation and its findings with respect to this new evidence," Gen. David McKiernan - the senior U.S. officer in Afghanistan and the commander of the 40-nation NATO-led mission - said in a statement.

"The people of Afghanistan have our commitment to get to the truth," he added.

The attack has further strained relations between Afghanistan's U.S.-backed President Hamid Karzai and the foreign forces operating against the Taliban and al-Qaida in the country.

An Afghan government commission has said 90 civilians, including 60 children and 15 women, died in the bombings, a finding that the U.N. backed in its own initial report.

But an initial U.S. investigation released Tuesday said only up to seven civilians and 35 militants were killed in the operation in the western province of Herat.

A U.N. official who has seen one video of Azizabad told The Associated Press it shows maimed children. The official became highly emotional describing rows of bodies.

A second Western official has said one video shows bodies of "tens of children" lined up and he called the video "gruesome." The two officials spoke on condition they not be identified because the videos had not been publicly released.

Although the U.S. said Tuesday its investigation of the attack was complete, the military at that time appeared to leave open the possibility that photographs or video from the scene could emerge. American officials said privately last week that they were aware photographic evidence apparently existed, but that they did not have access to it.

"No other evidence that may have been collected by other organizations was provided to the U.S. investigating officer and therefore could not be considered in the findings," the initial U.S. report said.