UN, aid group leaders urge release of 17 staffers held by Yemen's rebels

The heads of six UN agencies and three international humanitarian organisations issued a joint appeal Thursday to Yemen's Houthi rebels for the immediate release of 17 members of their staff who were recently detained along with many others also being held by the Iranian-backed group.

Their appeal was echoed by a statement from several dozen nations and the European Union ahead of a UN Security Council meeting on Yemen where UN special envoy Hans Grundberg said the Houthis were holding all those detained in the crackdown incommunicado.

The Houthis said Monday they had arrested members of an American-Israeli spy network, days after detaining the staffers from the UN and aid organisations.

Major General Abdulhakim al-Khayewani, head of the Houthis' intelligence agency, announced the arrests, saying the spy network had first operated out of the US Embassy in the capital Sanaa. After it was closed in 2015 following the Houthi takeover of Sanaa and northern Yemen, he said, they continued