Prominent Egyptian activist Ahmed Douma was among prisoners pardoned by President Abdel Fattah el Sisi in a presidential decree issued on Saturday.
Ahmed Douma was sentenced in February 2015 to 15 years imprisonment over his participation in anti-government protests.
The conviction was upheld in 2020 by Egypt's highest court meaning his only avenue to being released was through a presidential pardon.
His family had submitted several requests for a presidential pardon citing his deteriorating health.
Douma was a leading figure in the revolt that toppled former President Hosni Mubarak. Rights campaigners said his conviction was related to his activism.
TRT Afrika and agencies