The cleric has been behind bars since last year for criticizing the ruling Al Saud monarchy.
Since February 2011, protesters have held demonstrations on an almost regular basis in Saudi Arabia, mainly in Qatif and Awamiyah in Eastern Province, primarily calling for the release of all political prisoners, freedom of expression and assembly, as well as an end to widespread discrimination.
However, the demonstrations turned into protests against the repressive Al Saud regime, especially after November 2011, when Saudi security forces killed five protesters and injured many others in the province.
Saudi forces have also arrested dozens of people including prominent Shia cleric Sheikh Nimr al-Nimr.
The country’s officials warned in October that they would deal "firmly" with anti-regime demonstrations. Amnesty International slammed the warning, and urged the authorities to "withdraw their threat."
