"The United Nations might get involved in the controversy over the KRG's independence referendum plans in the upcoming days", he said.
The parliament of Iraq's autonomous Kurdistan region convened for the first time in two years yesterday to vote on a plan to hold a referendum on independence on September 25.
The planned vote has faced strong opposition from the federal government in Baghdad as well as neighbouring Iran and Turkey, which fear it will stoke separatist aspirations among their own sizeable Kurdish minorities.
The White House issued a statement following the Kurdish vote, calling on the Kurds to call off the vote and "enter into serious and sustained dialogue with Baghdad".
"We've been waiting more than 100 years for this", Omed Khoshnaw, a lawmaker from the Kurdistan Democratic Party (KDR) of KRG President Massoud Barzani, told Reuters.
Washington has previously suggested it opposes the referendum on the grounds that it would weaken Arab-Kurdish joint military operations that have helped to send the Islamic State (IS) group into retreat in both Iraq and war-torn Syria.More news: WWE Smackdown: Kevin Owens assaults Vince McMahon
"The referendum's legitimacy comes from the people of Kurdistan, not from the outside", he added.
Iraq's Prime Minister says he received a call from his Turkish counterpart who underscored his rejection of the controversial referendum Iraq's Kurdish region plans to hold this month. Irbil and Baghdad have always been in disagreement over oil revenues and contracts the Kurdistan region has signed with oil companies.
Barzani has been in dispute with Gorran since he blocked its parliamentarian speaker from Irbil and shuttered the legislature in 2015.
Opposition parties Goran and Jamaa Islamiya earlier said they would boycott the session.
The Iraqi government believes that holding the referendum would violate the terms of the country's constitution. It is also created to strengthen Barzani's position as a Kurdish nationalist leader.
Iraq's Kurdish region has enjoyed a high degree of autonomy since the USA imposed a no-fly zone over northern Iraq after the 1990 Gulf War.