Al-Qaeda in Iraq has said its fighters have kidnapped 20 Iraqi soldiers and policemen in northeast Baghdad.

In an internet statement released on Saturday, the group called Islamic State of Iraq said the men would be killed unless the government released all Sunni women held in Iraq's prisons within 48 hours.

The group also posted still images showing the purported captives dressed in brown army and blue police uniforms, blindfolded and handcuffed.

The movement's claim to have captured the men could not be independently verified.

The group demanded the release of "Muslim Sunni sisters who are in the prisons of the interior" ministry, in the statement posted on a website used by Iraqi armed groups.

"The Islamic State of Iraq gives the government of [Prime Minister Nuri al-Maliki] 48 hours to meet its demands or it will execute the rule of God on them," it said.

The Iraqi government has not yet responded to the group's claim or to its demands.

Other demands

The group also said the government should hand over to it agents from Iraq's interior ministry who are accused of involvement in the rape of a Sunni woman.

The rape of the woman known by the pseudonym of Janabi, who appeared in footage broadcast on Arab TV networks saying she had been raped by interior ministry officers, triggered a bitter row at the highest levels in Iraq.

The photos of the 20 men posted on the internet, of various ranks, included a security unit commander, according to the picture of his ministry identification card.

The statement did not say when the men were captured.

The group, which was formed last year by al-Qaeda's wing in Iraq and several smaller Sunni armed groups, has previously claimed responsibility for mass kidnappings and a series of major attacks.

PHOTO CAPTION

Iraqi captives included the identification card of a security unit commander. (Al-Jazeeera)