The Saudi-led coalition engaged in Yemen said on Friday it transported more than 100 freed prisoners to Yemen in coordination with the International Committee of the Red Cross in a humanitarian initiative to support a U.N.-brokered truce.

The coalition said last month it would release 163 prisoners from Yemen’s Iran-aligned Houthi group who fought against Saudi Arabia, but a Houthi official later said the list included individuals who did not belong to the movement.

The coalition said 108 detainees were flown from Saudi Arabia to the southern city of Aden, where Yemen’s Saudi-backed government is based, and nine to the Houthi-held capital Sanaa. The ICRC in a statement confirmed 117 had been repatriated.

The coalition said 37 prisoners were taken by land across the Saudi-Yemen border. It said nine “foreign fighters” were being handed over to their embassies, Saudi state media reported, without specifying their nationalities.

A Yemeni government official told Reuters the Houthis had refused to take those flown to Aden. Earlier this month, the head of the Houthis’ prisoner affairs committee said the list of detainees included people “unknown to us and who are not among our prisoners”.

The coalition intervened in Yemen in March 2015 against the Houthis after they ousted the internationally recognised government from Sanaa in late 2014.

The warring parties agreed on a two-month truce that began on April 2 in the first major breakthrough in years under U.N.-led efforts to end the war that has killed tens of thousands and caused a dire humanitarian crisis.

-Reuters