(Adds details, background) DUBAI, June 11 (Reuters) - An Iraqi al Qaeda-led group said on Monday it was holding 14 Iraqi army and police personnel and threatened to kill them in three days unless the government met its demands. "The Islamic State in Iraq gives the government of (Prime Minister Nouri) al-Maliki 72 hours to respond to its demands otherwise God's ruling will be implemented against them," the group said in a statement posted on the Internet. The Sunni Muslim militant group also posted a video showing the captured men wearing uniforms on a Web site used by Iraqi insurgents and other Islamist militant groups. The group, which has killed several hostages in the past, demanded the release of all Sunni Muslim men and women held by the Interior Ministry and the handover of officers it said were involved in atrocities against Sunnis in the northern town of Tal Afar. It also wants the Shi'ite-led government to hand over officers involved in the alleged rape of Sabreen Janabi, a Sunni Muslim woman. Janabi has said she was raped by officers from the police force dominated by members of the country's Shi'ite majority. The government said then that medical records showed she was not raped. In March the bodies of 14 Diyala-based policemen abducted by the group were found shot in the head. The group said then it killed the officers after the government ignored similar demands for their release. In the video, seven policemen and seven soldiers including a major were shown with the flag of the self-styled Islamic state in the background. Some of them were kneeling. It said they were seized north east of Baghdad without giving further details.