The Islamic State of Iraq, as the terror network's affiliate is known, demanded in a message posted Tuesday on militant websites that Abu Ayyub Al-Masri's family be released.

It purports that the wife and children have been in custody since the joint US-Iraqi air and ground assault near Saddam Hussein's hometown Tikrit in April that killed Al-Masri. Authorities have reported their detention but there has been no word on their whereabouts since.

Al-Qaeda says that unless Al-Masri's family is freed, it will kidnap "wives, daughters and sons" of Iraqi politicians and ministers.