The Saudi-led coalition said Monday that a ceasefire in Yemen will begin the following morning instead of at midnight as earlier announced, as warring parties prepared for talks in Switzerland.

The coalition said the truce will begin at 0900 GMT following a request by Yemeni President Abedrabbo Mansour Hadi, but warned that it "reserves the right to respond in case of any violation" by the rebels, said a statement carried by the SPA state news agency.