Sudanese authorities began closing off roads and bridges in the capital from midnight on Tuesday, ahead of a planned million-strong .
The military announced the closure of four out of ten main bridges connecting the capital to neighbouring cities Bahri and Omdurman, as the "resistance committees" called for a mass demonstration in the capital on Wednesday.
Resistance committees were formed in towns and villages across Sudan in late 2018 and played a significant role in organising protests until former president Omar al-Bashir was ousted in April the following year.
Protests have not stopped in the country since the army seized powers on 25 October, dissolved the military-civilian transitional council, and detained a number of civilian leaders.
At least 23 protesters and other civilians have been killed since the coup in military gunfire.
There have also been and disruptions to communication, forcing people to resort to other means to communicate and organise protests.
Sudan's top general Abdel Fattah al-Burhan last week announced a new civilian-military ruling body to replace the one he ousted.
The new council includes figures from the military and from ex-rebel groups from the deposed council.