The Prisoners of Conscience Twitter page said that the Saudi authorities transferred senior Hamas official Mohamed al-Khudari 81 back to Dhahban Central Prison after he spent some days in a hospital.
According to the page al-Khudari was one of the Palestinian detainees who were exposed to physical torture on the first days of their detention
Some of the detainees also suffered serious health problems and kidney failure because of their exposure to severe torture the page said.
On September 14 Hamas called on the Saudi authorities to immediately release Khudari who has been living in Saudi Arabia for over 30 years and represented the Movement between mid-1990s and 2003 in Saudi Arabia.
He has held other important positions in the Palestinian resistance movement as well.
