BAGHDAD, Iraq (CNN) -- Iraqi leaders are threatening to suspend all cooperation with United Nations weapons inspectors unless the U.N. Security Council resumes regular reviews of sanctions imposed on the Baghdad regime.

The official Iraqi news agency announced Wednesday that the Revolutionary Command Council, Iraq's highest decision-making body, had endorsed a decision taken Monday by the country's parliament, calling for an end to cooperation with inspectors.

However, U.N. Secretary-General Kofi Annan said he had not been directly notified by the Iraqi leadership. Likewise, a U.N. official said no one at the United Nations had been notified of such a move.

On September 9, the Security Council voted to suspend regular 60-day reviews of the sanctions imposed on Iraq after its 1990 invasion of Kuwait. The action means that there is no mechanism in place for lifting the punishing sanctions.

The council took that step after Iraq -- upset that chief U.N. weapons inspector Richard Butler would not certify that it had dismantled its capacity for making weapons of mass destruction -- withdrew its cooperation from inspectors. At the time, however, the Iraqis said they would continue to allow monitoring of sites previously inspected.

Now, the Iraqi parliament and Revolutionary Command Council are threatening to end even that level of cooperation, unless the Security Council relents and resumes periodic reviews of sanctions. However, the statements Wednesday stopped short of calling for an immediate end to cooperation.

Under the terms of previous U.N. resolutions, Butler must certify that Iraq has dismantled its capacity to make nuclear, chemical and biological weapons and ballistic missiles before sanctions can be lifted. Iraq insists it has complied with those demands, but Butler says his inspectors haven't been able to make that determination.

Reuters contributed to this report.