A scheduled trip of the UN Special Envoy Martin Griffiths to Yemen‘s rebel-held capital Sanaa on Sunday was delayed, a Houthi official said. Griffiths was set to arrive in Sanaa on Sunday to discuss the implementation of Stockholm Agreement with the Houthi rebels.

However, a plane arrived earlier the day in Sanaa was carrying other UN officials, the official said on condition of anonymity. He declined to give further details.