A Cairo Criminal Court sentenced six defendants to death on Monday in the case commonly known as "the popular resistance committee" in Kerdasa over violent and terrorist acts committed in 2013.
It also sentenced 41 defendants, including 28 in absentia, for life in prison, and seven defendants for 15 years behind bars.
The court acquitted 14 other defendants in the same case.
The prosecution charged the defendants with forming an illegal group called "the popular resistance committee" in Giza's Kedasa and Nahya districts, disrupting the provisions of the constitution and law, and preventing state authorities from performing their duties.
They were also charged with killing three people, including a State Security Department's conscript, the possession of firearms, ammunition and explosives, the torching of Kerdasa municipality council building, and the use of force against citizens.
The defendants can appeal the verdict.
This is one in a series of cases related to violent offences committed following the 2013 dispersal of the Muslim Brotherhood sit-in in Rabaa Al-Adawiya and Nahda Squares.