Leaders of all the five factions of the Verkhovna Rada have refused to establish a temporary special commission on preparation and approval of the draft law on amendments to the Constitution about the return to a presidential form of government, Verkhovna Rada Speaker Volodymyr Rybak has said on Thursday, Ukrinform reports.

"At a meeting in my office with the leaders of factions we discussed the possibility of setting up a temporary commission to amend the Constitution. The faction leaders agreed not to vote to set up such a commission because all the opposition factions refused to include their representatives in the commission," Rybak noted.

At the same time the speaker said the faction leaders will gather for meetings and work together on a bill to amend the Constitution.

Party of Regions faction leader Oleksandr Yefremov has said that members of his faction will participate in the drafting of amendments to the Constitution of Ukraine and that the new version of the country's main law could be adopted no earlier than September this year.

As reported earlier, Ukrainian opposition stands for changes to the Constitution of Ukraine that would weaken the powers of the president.