Updated

Hundreds of Yemenis are demonstrating in the capital, Sanaa, urging state security forces to return to the streets and demanding the departure of Shiite rebel militias.

The Sunday demonstrations come a day after Yemeni political forces signed a security deal in which the Shiite rebels, known as Hawthis, agreed to disarm their militia and withdraw from areas they recently seized.

The Hawthis' rivals — the Muslim Brotherhood-linked Islah party and other parties — also signed the deal, part of a comprehensive agreement brokered by the United Nations.

"For a secure capital free of armed militias," read a banner raised by demonstrators, who also called for the return of weapons seized by the Hawthis.

Meanwhile, Yemen's local al-Qaida branch claimed responsibility for firing a rocket at the U.S. embassy Saturday.