The "few bad apples" theory loses more credibility as new photos emerged today of Navy Seals abusing detained Iraqi prisoners . The photos were posted by a woman whose husband served in Iraq and brought them home with him.

The U.S. military has launched a criminal investigation into photographs that appear to show Navy SEALs in Iraq sitting on hooded and handcuffed detainees, and photos of what appear to be bloodied prisoners, one with a gun to his head.

Some of the photos have date stamps suggesting they were taken in May 2003, which could make them the earliest evidence of possible abuse of prisoners in Iraq. The far more brutal practices photographed in Abu Ghraib prison occurred months later.

An Associated Press reporter found more than 40 of the pictures among hundreds in an album posted on a commercial photo-sharing Web site by a woman who said her husband brought them from Iraq after his tour of duty. It is unclear who took the pictures, which the Navy said it was investigating after the AP furnished copies to get comment for this story.

The photos appear to have been taken after raids on civilian homes: