By Reuters Staff

5 Min Read WASHINGTON (Reuters) – Classified U.S. military video showing a 2007 attack by Apache helicopters that killed a dozen people in Baghdad, including two Reuters news staff, was released on Monday by a group that promotes leaking to fight government and corporate corruption.

The group, WikiLeaks, told a news conference in Washington that it acquired encrypted video of the July 12, 2007, attack from military whistleblowers and had been able to view and investigate it after breaking the encryption code.

A U.S. defense official, speaking on condition of anonymity, confirmed that the video and audio were authentic.

Major Shawn Turner, a spokesman for U.S. Central Command, said an investigation of the incident shortly after it occurred found that U.S. forces were not aware of the presence of the news staffers and thought they were engaging armed insurgents.

“We regret the loss of innocent life, but this incident was promptly investigated and there was never any attempt to cover up any aspect of this engagement,” Turner said.

The helicopter gunsight video, with an audio track of conversation between the fliers, made public for the first time a stark view of one bloody incident in the seven-year war in Iraq.

It showed an aerial view of a group of men moving about a square in a Baghdad neighborhood. The fliers identified some of the men as armed.

WikiLeaks said the men in the square included Reuters photographer Namir Noor-Eldeen, 22, and his assistant and driver Saeed Chmagh, 40, who were killed in the incident.