It was the latest development in the Hawthi blitz, which has plunged volatile Yemen into more turmoil, pitting the Shiite rebels against the Sunni-dominated military and their Islamist tribal allies.
The heavily armed Hawthi fighters yesterday seized tanks and armoured vehicles from military headquarters they had overrun, and raided the home of long-time archenemy Maj Gen Ali Mohsen al-Ahmar, the commander of the army's elite 1st Armoured Division and a veteran of a series of wars against the Shiite rebels, as well as residences of top Sunni Islamist militiamen or the fundamentalist Islah party.
After flooding into Sanaa, the Hawthis also took strategic installations and key state buildings, though they claimed later to have handed them back to the army's military police.
Thousands of Hawthi fighters- including many youths- were the only visible force Monday on the streets of the capital.
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They drove army tanks and armoured vehicles they looted from al-Ahmar's forces out of the city, heading north, likely to the Hawthis' heartland in the city of Saada.
Observers say the Hawthis' battlefield success reflects a major change in Yemen's political landscape, with traditional sources of power- Sunni Islamists, allied army generals and tribal chiefs- losing their grip as the central government gave in to the Shiite rebels to avert a full-blown civil war.
Mansour Hayel, a Yemeni political analyst, compared the Hawthi sweep to the rampage in Iraq and Syria by Sunni militants from the Islamic State group.
"The situation is very disturbing," Hayel said. "The state withdrew its control over institutions and the Hawthis and their affiliates replaced it. They are all over the city.