A black pall of smoke rises from an alleged weapons storage depot at a military camp of Houthi rebels after an airstrike of the Saudi-led alliance, in Sanaa, Yemen, March 30, 2015. [Photo/IC]

Yemen's worsening security situations have prompted more countries to decide to pull their nationals away from the deepening crisis.

A total of 449 Chinese nationals left the Yemeni coastal city of Al-Hodayda on Monday aboard a Chinese navy frigate.

Six people of other nationalities were also on board Weifang, which is heading for Djibouti.

On Sunday, 122 other Chinese nationals were evacuated from the Yemeni city of Aden and have already arrived in Djibouti.

The Chinese embassy in Sanaa remains open and will continue to assist a small number of Chinese nationals who choose to stay in Yemen.

In Jakarta, Indonesian Foreign Affairs Minister Retno Marsudi said on Monday that the government will send planes to evacuate its nationals from the war-torn country, and has asked Oman and Saudi Arabia to help secure the evacuation.

"Within the next one or two days there will be deployment from Jakarta to help prepare the evacuation," the minister added.

Indonesia has been gradually pulling out its nationals from Yemen since early this month. As of now 148 people have returned from Yemen following the political turmoil in the country.