CAIRO (AP) — Iranian-backed Houthi rebels detained two dozen U.N. employees Sunday, a day after they raided another U.N. facility in the capital Sanaa, a U.N. official said.

Jean Alam, a spokesman for the U.N. resident coordinator for Yemen, told The Associated Press that the U.N. staffers were detained inside the facility in Sanaa’s southwestern neighborhood of Hada.

He said those detained Sunday include five Yemenis and 15 international staff. He said the rebels released another 11 U.N. staffers after questioning.

He said the U.N. was contact with the Houthis and other parties to “to resolve this serious situation as swiftly as possible, end the detention of all personnel, and restore full control over its facilities in Sanaa.”

A second U.N. official, speaking spoke on condition of a

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