Sudan’s defence minister has announced he is stepping down as transitional leader a day after ousting the country’s autocratic president.

In a TV address, General Awad Ibn Ouf also announced his successor, General Abdel-Fattah Burhan, general inspector of the armed forces, as head of the transitional council.

Mr Ibn Ouf said: “I, the head of the military council, announce I am giving up the post,” adding he took the decision to preserve the unity of the armed forces.

General Awad Ibn Auf General Awad Ibn Ouf announced he is stepping down (Fethi Belaid/AP)

Tens of thousands of Sudanese protesters have been rallying in front of the military headquarters in Khartoum against the military takeover of power after the ousting of long-time ruler Omar al-Bashir on Thursday.

The Sudanese military has rejected calls that it hand over al-Bashir to the International Criminal Court where he faces genocide charges for his deadly campaign in the western Darfur region and said he would be put on trial at home.

The developments point to the sensitivity of the case of the Darfur conflict for the military council that has taken power after removing and arresting al-Bashir amid mounting protests against his 30-year rule.

Mr Ibn Ouf was head of military intelligence during the brutal campaign to suppress the Darfur insurgency in the 2000s.

The United States has imposed sanctions on him since 2007, saying he armed and directed pro-government militias known as the Janjaweed, accused of widespread atrocities against civilians and rapes during the conflict.

SudanDemonstrators want an end to military rule (AP)

Earlier on Friday, another top general Omar Zein Abedeen said that al-Bashir would not be extradited to the International Criminal Court based in The Hague, saying doing so would be “an ugly mark on Sudan”.

“Even rebels carrying weapons, we don’t extradite them,” he told reporters at a news conference in Khartoum.

Mr Zein Abedeen said Sudanese courts would hold al-Bashir “accountable,” but did not specify what charges he could be prosecuted on. In ousting the president, the military denounced him and his government for corruption, maladministration and “lack of justice”.

Meanwhile, Mr Zein Abedeen sought to reassure protesters who, while celebrating al-Bashir’s removal, oppose the military’s seizure of power in his wake.

After ousting the president, the military announced it would rule the country for two years through a transitional council. It also suspended the constitution, dissolved the government, declared a three-month state of emergency and imposed a night-time curfew.

Protest organisers have vowed not to end their street action until a civilian transitional council is formed, saying rule by military commanders who for years were al-Bashir loyalists is just an extension of his regime.

The curfew and state of emergency have raised fears the military could eventually disperse the sit-in by force. But at least initially, it appears to be trying to persuade protest organisers to end the campaign.

Speaking at a news conference aired live on state TV and flanked by other uniformed officers, Mr Zein Abedeen — who is tasked with leading dialogue with Sudan’s political factions — insisted the army has no ambition to hold the reins of power for long.

“If within a month, Sudan became able to run itself without chaos, we are ready to leave even after a month. The maximum is two years,” he said.