SANAA: The United Nations said all parties in Yemen have agreed to resume talks Monday, three days after a Shiite militia took power in a move widely condemned as a “coup,” while authorities in the country’s south rejected the takeover. Factions including the Houthi militia accused of seizing power would take part in the talks, envoy Jamal Benomar said as the U.N. chief called for Western-backed President Abed Rabbou Mansour Hadi to be restored to power.

Friday, the militia dissolved parliament and created a “presidential council” in a move it said was designed to fill a power vacuum after Hadi and Prime Minister Khalid Bahah resigned last month.

The militia also sought to portray the move as a way of confronting Al-Qaeda, which has a strong presence in east and south Yemen.

Benomar told reporters in Sanaa that militia leader “Abdel-Malek al-Houthi and all political parties in Yemen have agreed to resume dialogue ... which will begin Monday.”

The U.N. envoy insisted all political leaders “take up their responsibilities and achieve consensus” in order to reach a “peaceful solution” to the crisis.

Tensions remained high in the south and southeast, where authorities said they did “not recognize” the rule of the Houthis and that they “totally reject the constitutional declaration” under which they seized control.

Speaking after talks with King Salman in Sunni powerhouse Saudi Arabia, U.N. Secretary-General Ban Ki-moon warned “the situation is very, very seriously deteriorating, with the Houthis taking power and making this government vacuum.”

“There must be restoration of legitimacy of President Hadi,” Ban said to reporters.

The fall of Hadi’s government has sparked fears that impoverished Yemen – strategically located next to oil-rich Saudi Arabia and on the key shipping route from the Suez Canal to the Gulf – would plunge into chaos.

Yemen’s Gulf neighbors, led by Saudi Arabia, Saturday voiced alarm and condemned what they called a “coup” in Sanaa.

A U.S. official at a security conference in Munich said Washington and its Gulf Arab allies “don’t agree” with the Houthis’ plans for a transition of power.

Arab League chief Nabil Elaraby Sunday echoed that statement, branding the move by the Houthis as a “coup against constitutional legitimacy to impose that group’s will at gunpoint.”

Hadi had been under virtual house arrest since the Houthis seized the presidential palace and key government buildings last month, prompting him to tender his resignation to parliament, along with Bahah.

The Houthis have said they will set up a national council of 551 members to replace the legislature in the violence-wracked country. They invited the members of the country’s dissolved parliament to join the council.

Yemen is a key American ally in the fight against Al-Qaeda in the Arabian Peninsula.

Abdel-Malek al-Houthi said that creating the transitional bodies, which include a security committee, would also head off the threat posed by Al-Qaeda.

However, the statement by authorities in the south, which was independent until 1990, said forces in these provinces – Aden, Abyan, Lahj, Shabwa, Daleh and Hadramawt – rejected the Houthi takeover.

In the oil-rich eastern province of Marib, which the Houthis have long been eyeing, deputy governor Abdel-Wahid Namran told AFP that Sunni tribesmen were “discussing means of facing any developments.”

Marib residents said heavily armed tribes were preparing to counter any attempts by the Houthis to take over their region.

“The Houthis are incapable of governing [Sunni-majority] Yemen alone,” analyst Ali al-Bakaly said.

Attempts to expand beyond Sanaa and nearby cities “under the cover of the constitutional declaration ... will provoke a civil war” in the tribal country awash with weapons.

The Houthis, also known as Ansarullah, have been met by deadly resistance from Al-Qaeda and Sunni tribes since they descended from their Sanaa stronghold last year.

Ban said his envoy Benomar had been “working very hard in Yemen, facilitating a way out of the current political crisis and a return to the path of the peaceful political transition.”

U.N. Security Council president Liu Jieyi said Friday its members were ready to “take further steps” if U.N.-brokered negotiations to resolve Yemen’s political crisis were not resumed “immediately.”