Houthi rebels and their allies in Yemen have stormed the presidential palace in Aden following heavy clashes, officials say.
The rebels pushed through to the heart of the port city using tanks and armoured vehicles, despite air strikes by a Saudi-led coalition.
At least 44 people have been killed in the violence, including 18 civilians, according to AFP.
Separately, a Saudi border guard has reportedly been killed by gunfire.
It is the first known Saudi fatality since it began an air campaign against the Houthis last week.
The Saudi government says the aim of its operation in Yemen is to protect President Abdrabbuh Mansour Hadi’s “legitimate government”. It says it has no plans to deploy ground forces for now.
Aden was President Hadi’s last seat of power before he fled to Saudi Arabia last week, as the Shia rebels advanced on the city.
“There are bodies and wounded in the streets and nobody dares to approach,” said a resident in the central neighbourhood of Crater.
American political tradition demands that at this time, the party not in power demands to know, “Who lost [Country X]?” But the fact of the matter is that Yemen, despite Administration claims that it was a “success story,” was never ours to lose.
Of course, President Obama opened himself up to the “Who lost [Country X]?” question by making such an outrageous, false claim.