Sudanese pro-democracy protesters who spent four months on the streets rallying against the country's autocratic president are now defying the military leaders who overthrew Omar al-Bashir the day before.
Ibn Auf said on Thursday that Bashir was being detained in a "safe place" and a military council - which it was later announced he is heading - would now run the country.
Zeinalabdin tried to distance the military leadership from those accusations by claiming they were all from the military, rather than Bashir's National Congress Party, and had supported the protests.
Ibn Auf said Lieutenant General Abdel Fattah Adelrahman Burhan will now head the transitional council.
In the wake of the coup, worldwide human rights groups urged Sudanese military authorities to hand over the 75-year-old Bashir to the global Criminal Court, where he faces charges of war crimes, crimes against humanity and genocide for his deadly campaign against insurgents in the country's Darfur region.
Mr Bashir's downfall followed months of unrest that began in December over rising prices.
The Sudanese Professionals Association, which has led the organisation of protests, rejected the council's statement "based on the experience of the Sudanese people in dealing with all the deception".
It also vowed to "resist" by peaceful means all the extraordinary measures the military has imposed since Thursday's ouster of al-Bashir, including the nighttime curfew and state of emergency.More news: Keita and Firmino put Liverpool 2 up
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Youssef pointed out that there was no legal basis for forming a military council and called on all political forces, and the army to reach agreement on the formation of a government. "Instead, they must now consign to history the assault on human rights that marked Bashir's 30 years in power", said South Africa's Naidoo.
The group encouraged continued protests at the army's headquarters in Khartoum and military posts around the country "until state power is reinstated to a civilian transitional government that represents the forces of the revolution".
Ouf, on a US sanctions list for Darfur genocide along with his former boss al-Bashir, was sworn in on Friday as head of the new military transitional council that has taken charge for the next two years. "We are not greedy for power".
The military council appealed for financial aid from regional peers to tackle a worsening economic crisis.
Said Naidoo: "We need to finally see him held accountable". New demonstrations broke out Thursday afternoon in the capital, Khartoum.
United Nations chief Antonio Guterres called for a transition that would meet the "democratic aspirations" of the Sudanese people and appealed for "calm and utmost restraint by all", his spokesman said.
The AU says the move is not the appropriate response to the challenges facing Sudan and the aspirations of its people.
Russia, which twice hosted Mr Bashir despite the global travel ban he faced, called for calm.