Anti-government protesters in Egypt hold rallies across the country, censuring the crackdown on opposition activists.

Protest rallies, organized by Egypt’s Revolutionary Youth movement, took place in a number of provinces throughout the country on Sunday.

Police clashed with the protesters after the latter used fireworks and shouted slogans against what they referred to as the martial law and oppressive measures imposed by Egypt's Interior Ministry, opposition news website Rassad reported.

The development came after an Egyptian judge adjourned court proceedings earlier on Sunday for Morsi, who was the country’s first freely-elected president, and 10 other opposition figures until September.

Protests were also held in Egypt’s northern al-Jizah Province.

In al-Sharqiya Province, meanwhile, protesters also demanded the prosecution of those who led the military coup against Morsi in July 2013, and clashed with police officers.

Major rallies were also held in other Egyptian cities, with demonstrators condemning the use of torture in the country’s prison facilities as well as what they described as pre-arranged killings of imprisoned opposition activists. The protesters also demanded the release of all female inmates in military prisons.

The developments came as an Egyptian court sentenced nine more Muslim Brotherhood members to life imprisonment for their alleged role in violence in northern Ismailia Province following the military coup against Morsi, which was led by then army chief and current President Abdel-Fattah al-Sisi.

According to local and international human rights organizations, the government crackdown on Morsi’s supporters has left more than 1,400 people dead; thousands have also been arrested, while hundreds have been sentenced to death in mass trials.