BENGHAZI, Libya — Libya’s internationally recognized government on Monday rejected a U.N. proposal for a power-sharing arrangement with rival Islamist-led authorities that was intended to bring peace to the north African nation.

The internationally recognized parliament will not sign the agreement to form a unity government because the U.N. refused to exclude amendments added by the Islamist authorities without its consent, government spokesman Farraj Abu Hashem said.

Libya slid into chaos after the 2011 toppling and killing of longtime dictator Moammar Gadhafi. The internationally recognized government is based in the far eastern town of Tobruk, while a rival Islamist-led government is based in the capital, Tripoli.

The special U.N. envoy for Libya, Bernardino Leon, announced the proposal along with a list of candidates to head the new body on Oct. 8.

U.N. deputy spokesman Farhan Haq said Leon has made clear “that this is the final text.”

“We are not reopening the text and our hope remains that all sides will agree to the text for the good of the people of Libya,” Haq said.

The amendments that angered the Tobruk lawmakers would have given the unity government the power to fire all senior Libyan officials not unanimously approved by its members. The Tobruk government saw this as an attempt to remove their fiercely anti-Islamist army chief.