Russian Foreign Minister Sergey Lavrov has said that "no consensus" has been reached over the timing of polls in rebel-held east Ukraine, after France and Germany pushed for elections to be held by the end of July.

Russian Foreign Minister Sergey Lavrov has said that "no consensus" has been reached over the timing of polls in rebel-held east Ukraine, after France and Germany pushed for elections to be held by the end of July.

The top diplomats from Ukraine, Russia, France and Germany met in Paris Thursday but failed to make a breakthrough on a stalled peace plan for east Ukraine thrashed out in the Belarusian capital Minsk a year ago.

Lavrov said that Germany and France had pushed for the meeting to call on all sides in the conflict to hold elections by the end of July, but that Kiev had opposed the demand.

"We were ready to support it but the Ukrainian side requested that it not be insisted upon. As a result, no consensus was reached," Lavrov said in comments posted on the foreign ministry website on Friday.

Kiev says Russia must return control over its border in order to cut off the flow of weapons and fighters, but Moscow says the Ukrainian authorities must first guarantee the rebels greater autonomy and hold elections.

"Unfortunately there have been no breakthroughs in the most important area - preparations for elections," Lavrov said.

French Foreign Minister Jean-Marc Ayrault said that the Paris meeting on Thursday was a "step forward", but his German and Ukrainian counterparts painted a gloomier picture of negotiations.