7,300 Palestinians, including 17 legislators and two former ministers, are currently detained in about 20 Israeli prisons, a report says.
Hundreds of them have never been charged or put on trial.
Among the detained are 33 women, nearly 300 children, 296 administrative detainees, and dozens of political leaders, Palestinian researcher Abdul Nasser Farawna said in a report issued on Monday.
Farawana, who specializes in detainee affairs, said that 1,500 of them are ill and need urgent medical attention and dozens need surgeries and hospitalization, but no action has been taken by the Israeli authorities.
The detainees are held in about twenty prisons and detention and interrogation centers, mainly in Ramon, Shatta, Galboa, Asqalan, Hadarim, Al-Damoun, Be’er Sheva, Ofer, Majoddo, and the Negev detention camp, he added.
He went on to say that 83 percent of the detainees are from the West Bank, 10.6 percent are from Gaza, while the rest are Arab residents of Israel and other Arab nationals.
Jail terms range from 10 years to life sentences, Farawna, who is also a former detainee, explained.
Political figures like Nael al-Barghouthi, Fakhri al-Barghouthi, and Akram Mansour have been in prison for over 30 years.
Farawna has asked human rights groups and other similar institutions to bring this issue to light and is seeking help to obtain their release.
He added that the only Israeli prisoner of war, Gilad Shalit, who is held in Gaza, should not be released until all Palestinian detainees are released.