The supposed al Qaeda tape was obtained by the al-Arabiya televisition station. It featured the voice of a man claiming to be the terror groups' spokesman in Afghanistan, Abu Abdel Rahman al-Najdi.
"Mujahedeen in Iraq the entire world watched the fall of the Iraqi regime. Today it is watching your resistance to the Americans, the British and their agents," he said, according to a translation by Agence France- Presse. It then call on Iraqis to "pursue their resistance" and follow the example of al Qaeda in Afghanistan, where the tape claimed 1,200 U.S. and allied troops were killed.
The tape also claims that Taliban leader Mullah Omar and al Qaeda leader Osama bin Laden are alive and well, AFP reports.
Late Monday, Central Command announced that a First Armored Division soldier was killed by an explosive device. The incident took place in the Karadah District. The soldier was medically evacuated to a combat hospital, where he was pronounced dead. The soldier's name is being withheld pending notification of his next of kin. As of Sunday, 268 U.S. soldiers have died since the beginning of military operations in Iraq
The tape comes at a time when U.S. troops are dealing with increased sabotage of their attempts to normalize Iraq, reports CBS News Correspondent Randall Pinkston.
Attacks over the weekend on a water pipeline and prison in Iraq, and two suspicious fires at oil pipelines, raised concerns that Iraqi insurgents are now moving to hit Iraqi civilians and infrastructure.
In other developments:
Mazen Dana, 43, was shot and killed by U.S. soldiers Sunday while videotaping near a U.S.-run prison on the outskirts of Baghdad. The U.S. Army said its soldiers mistook his camera for a rocket-propelled grenade launcher.
Press advocacy groups Reporters Without Borders and the U.S.-based Committee to Protect Journalists demanded a full investigation into the shooting.
A U.S. military official said on condition of anonymity that American soldiers saw Dana from a distance and mistook him for an Iraqi guerrilla, so they opened fire. When the soldiers came closer, they realized Dana was a journalist, the official said.
"This is clearly another tragic incident, it is extremely regrettable," Central Command spokesman Sgt. Maj. Lewis Matson said.
In the attack Dana was covering, U.S. military spokesman Spc. Anthony Reinoso said Sunday that someone fired two mortar rounds at the prison, killing six Iraqis and wounding 58. He didn't know whether the casualties were guards or prisoners, or who was responsible.
The motivation was unclear. The Abu Ghraib prison, where Saddam's regime executed political prisoners and others, is being used by Iraq's U.S. occupiers to house high-security criminals. U.S. troops at and near the prison have been attacked in past months.
Sunday's explosion in northern Baghdad blew a hole in a 5-foot-diameter water main, flooding streets. People waded through chest-high water in some areas. Witnesses said two men on a motorbike left a bag of explosives and detonated it minutes later.
A suspicious fire continued to rage on Iraq's main northern oil export pipeline into Turkey, the U.S. Army said. Accounts varied over whether the blaze was accidental or an act of sabotage. It would take at least 10 days to repair the damaged pipeline, 4th Infantry Division spokeswoman Maj. Jocelyn Aberle said.
The email uncovered by the British inquiry was from Jonathan Powell, Blair's chief of staff, to intelligence committee head John Scarlett.
"In other words it shows he has the means but it does not demonstrate he has the motive to attack his neighbors let alone the west," the email read.
"We will need to make it clear in launching the document that we do not claim that we have evidence that he is an imminent threat," the email continued. "The case we are making is that he has continued to develop WMD since 1998, and is in breach of U.N. resolutions."
The dossier ultimately warned of a "serious and current threat".