"Experts from U.S. and Iran are to meet on Monday in Baghdad to discuss setting up a trilateral security committee (on Iraq)," the source, who asked not to be named, told the independent news agency Voices of Iraq (VOI).
The source added "the committee is to be formed upon an Iranian proposal that was made during the second round of U.S.-Iranian talks held in Baghdad on July 24."
The meeting, the source pointed put, "is expected to define the jurisdiction of the proposed committee which will also include Iraq in addition to U.S. and Iran."
Iraqi Prime Minister Nouri al-Maliki urged both U.S. and Iran to help Iraq regain security and warned that the armed groups like Qaeda might move into other countries' soil after it had been considerably hit in Iraq.
"We are seeking the support from U.S. and Iran to regain stability in Iraq as we are keen on non interfering in others' internal affairs as much as we reject others' interference in ours," Maliki told the opening session of the second round of talks between U.S. and Iran in July.
Last May saw the first round of talks between Iran and U.S.