The imprisoned Syrian researcher Saleh Al-Shami, 88, has suffered from serious health deterioration and spent 15 days in the hospital.
However, the Saudi authorities moved him back to prison despite his difficult health situation.
Despite his old age and difficult health condition, Saleh Al-Shami has continued to be forcibly disappeared for four months.
Al-Shami was detained last January along with the Syrian activists, Dr. Rabih Al-Rahibani, Muhammad Al-Saour, Salim Mahmoud, Walid Al-Durra, and Tahseen Saleh Al-Shami.
Sheikh Saleh Al-Shami, from Douma town in Damascus, has been residing in the Kingdom since 1980, during which he taught Sharia sciences in the scientific institutes of the Imam Muhammad bin Saud Islamic University, and worked there as a teacher.
The Saudi authorities have regularly launched large-scale arrest campaigns against academics, activists, and preachers over freedom of speech charges.
In the wake of leaked accounts of torture and mistreatment, Saudi Arabia imposes a complete blackout on the detention conditions of many detainees.