"The Sudanese people are not giving up, and neither will we," Phee said during a conference call late on Saturday night.
"The goal is to bring an end to this fighting and a start to civilian government.
"At the direction of the [US] secretary [of State Antony Blinken], we are in close contact with Sudan's military and civilian leaders to see if we can help them identify a path to extend and expand that Eid Al-Fitr ceasefire to reach a sustainable cessation of hostilities," said she