ADEN, Yemen — Houthi rebels released five Yemeni United Nations staff members and allowed 15 international ones to move freely within the U.N. compound after detaining them there in Sanaa over the weekend, a U.N. spokesperson said Monday.

Stephane Dujarric, the U.N. spokesperson, also said Houthi security forces had left the compound after the latest of such raids on international organizations.

The Houthis have a long-running crackdown against the U.N. and others working in Yemen’s rebel-held areas, including capital Sanaa, the coastal city of Hodeida and rebel stronghold in the northern province Sadaa.

The rebels have repeatedly claimed, without evidence, that the detained U.N. staff and employees of other organizations and embassies were spies, which the U.N. has denied.

Dozens of p

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