The file photo taken on April 23, 2016 shows ousted Islamist president Mohamed Morsi behind the defendants' cage at a court during his trial in Cairo, Egypt. (Xinhua/Ahmed Gomaa)

CAIRO, Oct. 22 (Xinhua) -- An Egyptian court confirmed a 20-year prison sentence against deposed Islamist President Mohamed Morsi on Saturday, reported the official news agency MENA.

The 20-year sentence is over charges of violence and murder which occurred outside the presidential palace in 2012, according to MENA.

Egypt's highest court, the Court of Cassation, rejected Morsi's appeal, rendering the sentence final.

The case dates back to Dec. 2012, when clashes erupted outside the presidential palace between Morsi's supporters and opponents, during which 10 people died.

Morsi was deposed by the army in 2013 in response to mass protests against his rule.

Furthermore, on May 17, 2015, Morsi and 106 of his Muslim Brotherhood supporters received death sentences over a mass jail break following the 2011 uprising which removed the country's long time ruler, Hosni Mubarak.

Morsi, along with seven other Muslim Brotherhood members, received life sentences in June after the court found them guilty of conspiring with militant Hamas and Hezbollah groups against Egypt's national security.