"The verdict is final and cannot be appealed," a judicial official said on Monday.

In August 2013, one month after the ouster of the first democratically elected president Mohamed Morsi, police dispersed a mass sit-in protest in Cairo's Rabaa al-Adawiya Square. Security forces killed hundreds of people in a matter of hours, in what Human Rights Watch concluded "likely amounted to crimes against humanity."

The protest was staged by Morsi’s supporters.

Hours later, a furious crowd attacked a police station in the Cairo suburb of Kerdassa, where 13 policemen were killed.

According to HRW, nearly 85,000 protesters joined the sit-in, which extended for over 45 days and grew larger and more organized with time. Thousands were arrested on the day of the massacre and in the following months.

The same court on Monday also sentenced 80 people to 25-year prison terms and a further 34 to 15 years each in jail over the Kerdassa incident. It also acquitted 21 defendants.