Sudanese protesters have hardened their stand, demanding a transitional military council be scrapped and immediately replaced with civilian rule as Tuesday they refused to end a days-long sit-in outside army headquarters.
Organisers fear the army is seeking to hijack the revolution on the streets which saw veteran president Omar al-Bashir, whose three-decade reign was toppled on Thursday by top commanders after four months of nationwide demonstrations.
On Monday, activists accused commanders of launching an abortive attempt to clear the sit-in outside army headquarters, ending the relative calm that has reigned since Bashir's overthrow.
Witnesses said several army vehicles had surrounded the area and that troops were seen removing the barricades which demonstrators had put up as a security measure.
Activists voiced fears that the army would make a new attempt on Tuesday.
Several vehicles carrying paramilitary forces deployed on a bridge that connects the protest site with north Khartoum, a witness said.
"The army will try to make another attempt to disperse the protesters because it is under huge pressure," said protester Ahmed Najdih.
"But we are not going anywhere. We will not lose our patience. We know what happened in Egypt and we don't want that to happen to us."