The International Committee of the Red Cross announced a temporary suspension of its operations in Yemen's southern city of Aden as from Tuesday after armed people stormed its office and threatened the staff with guns.
The incident occurred on Monday forcing the ICRC to evacuate the foreign staff and suspend its activities, news reports quoted a spokesperson for the ICRC as saying.
Around 80% of Yemen's population are in need of emergency aid amid the several-months armed conflict.
International organizations have been calling for rallying humanitarian aid to Yemen and urging the warring parties to cooperate on aid delivery and access.
Separately, reports said Saudi special forces have been dispatched into Aden to help the local authorities to secure the cities which were lately retaken from the Houthi militants.
The Saudi forces will also help restore and boost security and provide defense consultancy to the government forces and the popular resistance, the reports said.
Saudi Arabia is leading an Arab coalition that has been conducting airstrikes against the Houthi militants since March.
The coalition have also provided weapons and lately sent forces including UAE ground troops that helped the Yemeni forces to retake Aden and the other southern cities from the Houthis.
Information minister, Nadia Al-Sakkaf, within the government which has been acting form Saudi Arabia for months lately said Aden will be the capital of Yemen for the next five years.
The Houthi militants with support from the forces loyal to the firmer president ousted the government and seized the capital Sanaa in late 2014 sparking a civil war and, later in March, the Saudi-led military intervention.