The splits underscored the complex task the United Nations faces in implementing any agreement for a united national authority and a peace deal on the ground where two rival governments and various armed factions battle for control.

UN special envoy Bernardino Leon presented a fourth proposal for a peace plan and unity cabinet after months of talks in Morocco, which both sides were expected to discuss with European and North African officials in Germany.

"We are in Berlin," Emhemed Shoaib, a deputy speaker said. UN spokesman Samir Ghattas confirmed that the delegation was in Germany as part of the talks.

But four lawmakers, speaking from eastern Libya where the elected assembly is based, said the assembly had rejected the proposal and withdrawn its delegates from the talks.

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