The ten defendants are being tried on charges of ordering the killing of demonstrators upon the January 25 revolution, which brought Mubarak's three-decades of rule to an end in 2011.
Former military police commander Hamdi Badeen, who is now Egypt's military attaché in China, is expected to testify during the session, which is held at the Police Academy on the eastern outskirts of Cairo where the trial of ousted president Mohamed Morsi on charges of inciting the killing of demonstrators, is also held.
The Executive President of the Egyptian National Telecommunications Regulatory Authority Amr Badawi is also expected to testify during the session.
The backers of Mubarak, who now receives treatment at a southern Cairo military hospital, converged on the vicinity of the court.
The judge presiding over the trial has banned the live broadcast of trial sessions until he hears the accounts of the witnesses.
The former president, his two sons, and a business tycoon are also accused of financial corruption.
Von der Leyen expresses regret for cancellation of German lawmakers' visit to Turkish base
Istanbul police were searching for 51 FETÖ suspects charged with financially supporting the extreme group
- Turkish forces kill 3 PKK extremists in Hakkari province, military says
Governorship says seven people were slightly injured after assailant shot at coaches in Turkish capital
A crackdown on those linked to Erdogan has seen the arrest of 28 people in a number of cities across the country
The Turkish military has bombed positions of PKK terrorist group in Iraq's Hakurk region and Turkey's southeastern provinces
Turkish president and the leader of Palestinian group talk about resolving disagreements between Palestinians
“European countries remain incapable of solving ongoing problems. That's why Turkey should be a member of the union,” Turkey's EU minister says
PKK terrorists have attacked Turkish troops in southeastern Hakkari and Mardin provinces
The 16th Criminal Chamber of the Supreme Court of Appeals in Ankara has ruled that the proceedings against former President, Military Officer Kenan Evren and Tahsin Sahinkaya, a Turkish Air Force Commander, were to be dropped due to the defendants' death and that their defence, while alive, was invalid.
Pascale Moreau says UN 'appreciates' Ankara's work with refugees but calls for political solutions to the crisis
Turkey may ask the public whether it should continue its EU bid if accession talks do not move forward, says foreign minister.
Four suspects, including a mayor, in southeastern Turkey face life imprisonment for reportedly allowing PKK extremists use state-owned machines in attacks.
Turkish Foreign Ministry describes reports of phosphorus bombs and incendiary cluster munitions as 'extremely worrying'
PKK extremist have been killed following an exchange of fire with Turkish gendarme forces in Elazig province
Turkey is blocking plans by a senior German delegation to visit the Incirlik air base, German officials have said.