The lawyer for an interned Palestinian who has been on hunger strike for 59 days said on Tuesday that he would ask Israel's supreme court to overturn a military order imprisoning his client without trial.
Attorney Jawad Bulus said he would file an urgent request to the Jewish state's highest court of appeals in light of a rapid decline in the health of 34-year-old Khader Adnan.
Bulus, who visited Adnan on Tuesday in the hospital where he is under guard in northern Israel, told AFP that the hunger striker's hands and legs were manacled to his hospital bed and he was being held in "inhumane conditions."
A member of Palestinian militant group Islamic Jihad, he has been detained by Israel without charge since December 17. In protest at his detention he began refusing food a day after his arrest and is now said to be close to death.
On Monday, a military court rejected an appeal by his lawyers against the four-month "administrative detention" order which allows him to be held without charge and which can be renewed indefinitely.
Bulus said that Adnan was on Tuesday still refusing to eat and fighting "for the dignity and pride of Palestinian prisoners held without justification."
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Palestinian prisoner affairs minister Issa Qaraqa has called for demonstrations, protest marches and solidarity fasts throughout the Palestinian territories on Wednesday.
Palestinian officials have warned that Adnan's death would spark mass protests throughout the West Bank and the Gaza Strip.
According to the Palestinian prisoners' club, Adnan's 59-day-old hunger strike is longer than that of any Palestinian prisoner before him.
He says Israel has no evidence against him, and accuses his interrogators of mistreating him, saying they made crude sexual comments about his wife and pulled his beard until hair came out.
Israel has not made any public allegations against Adnan, a one-time spokesman for Islamic Jihad.
Human rights groups have appealed to Israel to free him or put him on trial.
Under Israeli law, a military tribunal can order an individual held without charge for up to six months at a time. Such orders can be extended by further six-month periods indefinitely, if approved in a new court session.