Cairo: Libya’s parliament on Tuesday suspended its participation in United Nations-brokered talks over a proposed power-sharing scheme with a rival Islamist-led government.

A spokesman for the internationally-recognized parliament’s negotiators, Essa Abdul Kauoum, told The Associated Press the council made its decision after UN envoy Bernardino Leon “succumbed” to Islamist demands and presented a draft proposal that gives them more power.

“Leon brought us to square one... to appease an ideological group in a horrible way,” he said. “He succumbed to extortion.”

Abdul Kauoum added that his delegation would not be attending another planned meeting in Berlin.

Libya is split between an Islamist-led government backed by militias that seized the capital last August and the elected parliament, which is forced to convene in the country’s far east.

The UN draft stipulates the formation of a national unity government and would create a new Islamist-dominated body with legislative and executive powers alongside the elected parliament.

Mohammad Sawan, the leader of the political arm of Libya’s Muslim Brotherhood, issued a statement “welcoming” the new draft.

“We think this has achieved a tangible positive improvement which should be taken seriously and built upon to reach an agreement that ends the political division and achieves stability,” said Sawan, who heads the Justice and Construction Party.

Libya has slid into chaos since the 2011 overthrow and killing of longtime dictator Muammar Gaddafi. A patchwork of former rebel brigades, Islamic extremist groups and other militias control much of the oil-rich North African country.

The unrest has allowed Daesh militants to take over the central city of Sirte and march toward key oil terminals. On Tuesday, the militants seized a compound near Sirte that had been used as the headquarters of militias sent by the Tripoli-based government to battle the extremists.

The Daesh affiliate trumpeted its latest advance with online pictures and a statement. The compound is on the road to the coastal city of Misrata, home of the most powerful militia backing the Tripoli authorities.