Article snippet from your link: “The US military did not immediately confirm the arrest.”
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http://www.freerepublic.com/focus/news/2009929/posts?page=283#283
Abu Ayyub al Masri, al Qaeda in Iraq’s leader, reported captured in Mosul
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Defense Ministry spokesman Mohammed al Askari said al Masri’s capture was “confirmed to him by the Iraqi commander of the province,” The Associated Press reported. The person believed to be al Masri has been transferred to US custody for identification, according to Askari. Al Masri’s capture was also announced on Iraqiya Television, the state-run TV network, AP reported.
The Iraqi government has a history of announcing the capture of senior al Qaeda leaders, only to have to retract the statements. The Iraqi government had made several claims of wounding, killing and capturing both al Masri and Abu Omar al Baghdadi, the fictitious leader of al Qaeda’s Islamic State of Iraq, several times during 2007. The report turned out to be false reports or cases of mistaken identity.