The U.S. Embassy in Khartoum announced that the statutory 45 days had lapsed since President Trump gave Congress notice of Sudan's removal from the list of state sponsors of terrorism.
Last month, the Ethiopian government launched an offensive against a rebellious regional government. The ensuing conflict has killed hundreds, and almost 50,000 Ethiopians have crossed into Sudan.
The former premier's political party confirmed his death on Thursday. He was 84 and died in the United Arab Emirates, where he was receiving treatment.