By Dean Yates and Wisam Mohammed Fri May 9, 9:59 AM ET
The detention Zf Masri would have been another blow for al Qaeda, which has been forced to regroup in northern Iraq after a wave of U.S. military assaults in and around Baghdad.
Iraqi officials said the confusion was caused after a man with a similar name was detained in an operation in the northern city of Mosul late on Wednesday.
Masri, an Egyptian, has a U.S. bounty of $5 million on his head. "He has not been detained," a senior U.S. military official told Reuters, declining to comment further.
Government spokesman Ali al-Dabbagh criticized Iraqi officials for earlier saying Masri had been caught.
"The person who was detained has nothing to do with him. He is not even a senior leader in al Qaeda, he is just an ordinary member," Dabbagh said.
It is not the first time there has been confusion over the fate of Masri. Iraq's Interior Ministry said a year ago he had been killed, but soon afterwards Sunni Islamist al Qaeda released an audio tape purportedly from him.
Al Qaeda in Iraq was headed by the Jordanian militant Abu Musab al-Zarqawi until he was killed in a U.S. air strike in June 2006. His successor, Masri, was Zarqawi's close associate.
Senior Iraqi security officials had earlier said a captured associate of Masri took Iraqi forces on Wednesday to where he was thought to be hiding. After being detained, the man said he was the al Qaeda in Iraq leader, who is also known as Abu Hamza al-Muhajir, they said.
But the detained man just happened to share the name Abu Hamza, which in Arabic means father of Hamza. "Abu" is a common way for men who have children to be addressed in the Arab world.
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