The UAE-backed Southern Transitional Council has declared victory over the UN-backed government of Yemeni President Abd rabbuh Mansur Hadi in the southern city of Aden today.
Security sources told the Associated Press that Saudi guards had stopped the separatists from entering the palace, and that the prime minister and several ministers were preparing to flee the city imminently for Riyadh.
Bin Daghar and Yemen's president-in-exile, Abed Rabbo Mansour Hadi, have described the violence as a coup against the country's proper authorities. Hadi refused and banned public gatherings in response.
Infighting Sunday and Monday left at least 12 people dead and dozens injured in the southern coastal city of Aden.
Photo Supporters of the southern Yemeni separatists took part in an anti-government protest in Aden on Sunday.
Aden has been the government's base since 2014 when Houthi rebels from the North took control of Yemen's capital, Sana'a.
Now, that partnership appears shattered.
It has also exposed deep divisions within the alliance between Hadi's government and the Saudi-led coalition. Saudi Arabia backs Mr Hadi, who is based in Riyadh, while the United Arab Emirates - a key partner in the coalition - is closely aligned with the separatists.
The separatist group reportedly fought its way to the gates of the Al-Mashaiq Palace where Yemen's government resides.
On Tuesday, coalition members projected a united front. Saudi Arabia supports Hadi's government and has led a coalition of eight Arab countries to restore him to power.
The US State Department has expressed concern and called upon all parties to "refrain from escalation and further bloodshed".
"The fighting in Aden makes it impossible for us to carry out our lifesaving work", Tamer Kirolos, the director of Save the Children's operations in Yemen, said in a statement.
The lack of any progress on political negotiations, Mr. Dujarric said, "only piles onto the misery of the Yemeni people". Between vast outbreaks of cholera and diphtheria, desperate food insecurity and a crumbling infrastructure incapable of handling either, the ICRC "80% of the population need aid to survive".
Tension has steadily mounted in Aden since the STC called for the dismissal of Prime Minister Ahmed bin Daghr, accusing his government of pushing war-torn Yemen to the brink of starvation.