The Palestinian prisoner Khader Adnan has reached a very critical health condition after 80 days on hunger strike, demanding his immediate release.
Adnan was turned into a skeleton, suffering from frequent fainting.
His wife said that the Israeli authorities prevented the Red Cross and human rights institutions from visiting him or checking on his health condition.
No further information was given about his health condition after he was transferred to a civilian hospital within the Green Line, she added.
Khader Adnan continues his open-ended hunger strike for the 80th day in a row.
Earlier, an Israeli court rejected a request to release Adnan despite his difficult health condition.
Adnan is on hunger strike for the fifth time in an Israeli prison and has surpassed the duration of all of his previous strikes.
Adnan has been imprisoned at least 12 times since 2004. His last hunger strike had inspired a wave of Palestinian prisoners held in administrative detention to join him.
According to Palestinian figures, 900 Palestinians have been held in administrative detention, including five minors and a woman.
Administrative detention is incarceration without trial or charge, alleging that a person plans to commit a future offense. It has no time limit, and the evidence on which it is based is not disclosed. Israel employs this measure extensively and routinely, and has used it to hold thousands of Palestinians for lengthy periods of time.
While detention orders are formally reviewed, this is merely a semblance of judicial oversight, as detainees cannot reasonably mount a defense against undisclosed allegations. Nevertheless, courts uphold the vast majority of orders.
Israel routinely uses administrative detention and has, over the years, placed thousands of Palestinians behind bars for periods ranging from several months to several years, without charging them, without telling them what they are accused of, and without disclosing the alleged evidence to them or to their lawyers.