Khartoum protests
Sudan factions will sign constitutional declaration on August 17 - sources
The parties are expected to initial the declaration, which was agreed on Saturday, later on Sunday.
Sudan has been in a state of political turmoil since the army ousted veteran leader Omar al-Bashir in April, with dozens of demonstrators killed during street protests.
The two sides have already signed a power-sharing deal that aims to form a joint civilian-military ruling body which in turn would install civilian rule.
The new protest, expected to start at mid-day, comes at a time when Ethiopia and the African Union (AU) are jointly mediating between the protesters and generals.
The Central Committee for Sudanese Doctors blamed the ruling military council and paramilitary forces for the deaths.
Here is a summary of events leading up to the military's move to end the long-running protest.
It comes just days after Monday's crackdown by men in military fatigues on a weeks-long sit-in that left dozens of demonstrators dead.
The human rights watchdog called what happened in the Sudanese capital barbaric and a bloodbath.
Several vehicles carrying intelligence agency members and riot police arrived in the early hours Monday at the protest site, witnesses told AFP.
Security forces attacked the lawyers with tear gas, forcing them to disperse. There were no reports of casualties.
The second victim, the son of a well-known footballer, had been at a protest at a private university in Khartoum.
The overall death toll since the protests erupted in December has now reached 30, according to officials. Rights groups have put the death toll at more than 40.