The US State Department said the second convoy organized by the US government arrived in the coastal city of Port Sudan, overlooking the Red Sea, ahead of the departure of those present.
Two US officials told Reuters earlier that the United States had sent a navy ship to Sudan to help evacuate American citizens stranded in the country where fighting broke out this month.
The two officials, who spoke on condition of anonymity, said the USNS Brunswick, an express ship, was temporarily in Port Sudan.
One of them added that it is likely that hundreds of citizens will be evacuated aboard this ship.
The United States carried out the first evacuation of its citizens through the city of Port Sudan on Saturday, after having brought them there via a convoy that had left for a long journey from the capital, Khartoum.
The operation came after growing criticism and anger from Americans, who felt their government had left them alone in Sudan, which has been experiencing armed conflict since mid-April, in very dangerous security conditions.
Although many countries carried out evacuations of nationals from Sudan, the US State Department continued to insist that conditions were not conducive to the evacuation of civilian nationals.
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