A second key al-Maliki adviser, who spoke on condition of anonymity because he was not authorized to release the information, said, "In the past few hours, the government has arrested the person who videotaped Saddam's execution. He was an official who supervised the execution and now he is under investigation."

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Prosecutor Munqith al-Faroon, one of 14 official witnesses to the execution, told The Associated Press that he saw two government officials using camera phones at the hanging.

"I saw two of the government officials who were ... present during the execution taking all the video of the execution, using the lights that were there for the official taping of the execution," he said. "They used mobile phone cameras. I do not know their names, but I would remember their faces."

Caldwell said no Americans were present for the hanging and that the tumultuous execution would have gone differently had the Americans been in charge.

As the storm over the handling of the hanging gained strength, Caldwell was among several US officials who suggested displeasure with the conduct of the execution.

"If you are asking me: 'Would we have done things differently?' Yes, we would have. But that's not our decision. That's the government of Iraq's decision," the general said.

The Bush administration sent conflicting signals Wednesday about the taunting and baiting that accompanied Saddam's execution, with the White House declining to join criticism of the procedure and the State Department echoing the US military's questions about it.

"The president is focused on the new way forward in Iraq so these issues are best addressed out of Iraq, out of Baghdad," deputy White House press secretary Scott Stanzel said. "Prime Minister Maliki's staff have already expressed their disappointment in the filmings, so I guess we'll leave it at that."

Stanzel said the US military and the US Embassy in Iraq had expressed concerns about the timing of the execution and about "the process and what took place."

State Department spokesman Sean McCormack said US officials had questioned holding the execution on a Muslim festival day, the opening of Eid al-Adha, and as well as some procedures.

US Embassy spokesman Lou Fintor said Ambassador Zalmay Khalilzad and his diplomatic team "did engage the government of Iraq on issues relating to procedures involved in the timing of the execution (of Saddam), given the upcoming holy days. While the government of Iraq gave consideration to US concerns, all decisions made regarding the execution were Iraqi decisions based on their own considerations."

Wednesday's remarks by US officials were the first public confirmation of reports that the Americans had questioned the timing of the hanging.

The second-guessing over the conduct of the execution came as Iraqi and Arab media and an Iraqi government official said preparations were under way to hang two of Saddam's co-defendants in the next few days but that the details still have to be worked out with the American military.

A Cabinet official, speaking anonymously because of the sensitivity of the information, said the two men would hang "at the beginning of next week."

Caldwell said those executions, like Saddam's, were the responsibility of the Iraqi government. "It's a sovereign nation. It's their system. They make those decisions."

Saddam's half brother Barzan Ibrahim, a former intelligence chief, and Awad Hamed al-Bandar, the former chief justice of the Revolutionary Court, were originally scheduled to hang with Saddam. But their execution was delayed until after Eid al-Adha, which ended Wednesday for Iraq's majority Shiites.

Al-Arabiya satellite television and Al-Furat TV, run by Iraq's major Shiite Muslim political organization, both reported that Ibrahim and al-Bandar would go to the gallows on Thursday. However, Mariam al-Rays, an al-Maliki adviser, called such reports "baseless."

In Washington, US Supreme Court Chief Justice John Roberts denied a request by a lawyer for Bandar to block the US military from transferring custody of the condemned man to Iraqi authorities.

UN human rights chief Louise Arbour, backed by new Secretary-General Ban Ki-moon, appealed to Iraqi President Jalal Talabani to prevent the execution of Ibrahim and al-Bandar, saying she was concerned with "the fairness and impartiality" of their trials.

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