Updated

Russia says the U.N. Security Council's approval in establishing a new international body to assign blame for chemical attacks in Syria will be finalized and sent to Ban Ki-moon Thursday.

Russian Ambassador Vitaly Churkin, the council president this month, told The Associated Press that "yes, the response will be sent tomorrow. My prediction." The investigative body comes from rare cooperation between Russia and the United States on Syria.

Diplomats have said Russia has held up the council's approval, which was expected a week ago. Churkin described Russia's issues as "technical," but he has expressed interest in having a similar effort to investigate chemical attacks in neighboring Iraq.

But a spokesman for Iraq's U.N mission last week said Iraq did not want the new investigative body to extend to that country.